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 0.1.24-13a467a-m [2019-10-15 01:16:28,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:16:28,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:16:28,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:16:28,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:16:28,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:16:28,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:16:28,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:16:28,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:16:28,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:16:28,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:16:28,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:16:28,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:16:28,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:16:28,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:16:28,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:16:28,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:16:28,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:16:28,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:16:28,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:16:28,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:16:28,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:16:28,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:16:28,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:16:28,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:16:28,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:16:28,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:16:28,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:16:28,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:16:28,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:16:28,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:16:28,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:16:28,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:16:28,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:16:28,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:16:28,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:16:28,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:16:28,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:16:28,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:16:28,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:16:28,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:16:28,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:16:28,952 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:16:28,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:16:28,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:16:28,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:16:28,954 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:16:28,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:16:28,954 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:16:28,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:16:28,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:16:28,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:16:28,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:16:28,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:16:28,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:16:28,956 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:16:28,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:16:28,956 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:16:28,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:16:28,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:16:28,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:16:28,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:16:28,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:16:28,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:16:28,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:16:28,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:16:28,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:16:28,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:16:28,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:16:28,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:16:28,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:16:29,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:16:29,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:16:29,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:16:29,323 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:16:29,324 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:16:29,325 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product34.cil.c [2019-10-15 01:16:29,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3676f6/76291fab240c4c4eb96f595414395d78/FLAG986b8d059 [2019-10-15 01:16:30,059 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:16:30,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product34.cil.c [2019-10-15 01:16:30,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3676f6/76291fab240c4c4eb96f595414395d78/FLAG986b8d059 [2019-10-15 01:16:30,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3676f6/76291fab240c4c4eb96f595414395d78 [2019-10-15 01:16:30,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:16:30,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:16:30,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:16:30,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:16:30,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:16:30,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:16:30" (1/1) ... [2019-10-15 01:16:30,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335d4cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:30, skipping insertion in model container [2019-10-15 01:16:30,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:16:30" (1/1) ... [2019-10-15 01:16:30,275 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:16:30,358 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:16:31,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:16:31,133 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:16:31,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:16:31,367 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:16:31,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31 WrapperNode [2019-10-15 01:16:31,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:16:31,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:16:31,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:16:31,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:16:31,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... [2019-10-15 01:16:31,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:16:31,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:16:31,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:16:31,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:16:31,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:16:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:16:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:16:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:16:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:16:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:16:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:16:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:16:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-15 01:16:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-15 01:16:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:16:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:16:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:16:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:16:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:16:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:16:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:16:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:16:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:16:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:16:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:16:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:16:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:16:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:16:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:16:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:16:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:16:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:16:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:16:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:16:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:16:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:16:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:16:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:16:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:16:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:16:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:16:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:16:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:16:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:16:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:16:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:16:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:16:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:16:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:16:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:16:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:16:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:16:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:16:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:16:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:16:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:16:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:16:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:16:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:16:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:16:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:16:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:16:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:16:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:16:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:16:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:16:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:16:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:16:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:16:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:16:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:16:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:16:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:16:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:16:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:16:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:16:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:16:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:16:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:16:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:16:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:16:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:16:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:16:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:16:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:16:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:16:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:16:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:16:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:16:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:16:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:16:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:16:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:16:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:16:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:16:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:16:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:16:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:16:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:16:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:16:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:16:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:16:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:16:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:16:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:16:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:16:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:16:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-15 01:16:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:16:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-15 01:16:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:16:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:16:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:16:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:16:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:16:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:16:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:16:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:16:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:16:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:16:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:16:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:16:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:16:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:16:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:16:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:16:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:16:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:16:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:16:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:16:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:16:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:16:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:16:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:16:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:16:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:16:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:16:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:16:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:16:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:16:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:16:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:16:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:16:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:16:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:16:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:16:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:16:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:16:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:16:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:16:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:16:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:16:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:16:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:16:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:16:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:16:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:16:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:16:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:16:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:16:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:16:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:16:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:16:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:16:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:16:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:16:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:16:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:16:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:16:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:16:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:16:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:16:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:16:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:16:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:16:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:16:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:16:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:16:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:16:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:16:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:16:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:16:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:16:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:16:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:16:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:16:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:16:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:16:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:16:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:16:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:16:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:16:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:16:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:16:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:16:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:16:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:16:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:16:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:16:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:16:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:16:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:16:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:16:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:16:33,963 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:16:33,964 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:16:33,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:16:33 BoogieIcfgContainer [2019-10-15 01:16:33,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:16:33,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:16:33,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:16:33,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:16:33,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:16:30" (1/3) ... [2019-10-15 01:16:33,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9846da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:16:33, skipping insertion in model container [2019-10-15 01:16:33,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:31" (2/3) ... [2019-10-15 01:16:33,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9846da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:16:33, skipping insertion in model container [2019-10-15 01:16:33,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:16:33" (3/3) ... [2019-10-15 01:16:33,978 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product34.cil.c [2019-10-15 01:16:33,988 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:16:34,001 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:16:34,015 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:16:34,069 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:16:34,069 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:16:34,069 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:16:34,072 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:16:34,072 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:16:34,073 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:16:34,073 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:16:34,073 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:16:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states. [2019-10-15 01:16:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-15 01:16:34,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:34,159 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] [2019-10-15 01:16:34,162 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:34,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1836415482, now seen corresponding path program 1 times [2019-10-15 01:16:34,179 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:34,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263292076] [2019-10-15 01:16:34,180 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:34,180 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:34,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:34,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263292076] [2019-10-15 01:16:34,869 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:34,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:16:34,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527145830] [2019-10-15 01:16:34,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:16:34,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:34,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:16:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:16:34,895 INFO L87 Difference]: Start difference. First operand 659 states. Second operand 2 states. [2019-10-15 01:16:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:34,981 INFO L93 Difference]: Finished difference Result 1004 states and 1352 transitions. [2019-10-15 01:16:34,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:16:34,984 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 198 [2019-10-15 01:16:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:35,023 INFO L225 Difference]: With dead ends: 1004 [2019-10-15 01:16:35,024 INFO L226 Difference]: Without dead ends: 630 [2019-10-15 01:16:35,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:16:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-15 01:16:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-15 01:16:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-15 01:16:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 854 transitions. [2019-10-15 01:16:35,159 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 854 transitions. Word has length 198 [2019-10-15 01:16:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:35,161 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 854 transitions. [2019-10-15 01:16:35,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:16:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 854 transitions. [2019-10-15 01:16:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-15 01:16:35,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:35,167 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] [2019-10-15 01:16:35,168 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:35,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1234031911, now seen corresponding path program 1 times [2019-10-15 01:16:35,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:35,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761991767] [2019-10-15 01:16:35,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:35,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:35,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:35,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761991767] [2019-10-15 01:16:35,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:35,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:35,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100597440] [2019-10-15 01:16:35,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:35,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:35,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:35,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:35,503 INFO L87 Difference]: Start difference. First operand 630 states and 854 transitions. Second operand 3 states. [2019-10-15 01:16:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:35,563 INFO L93 Difference]: Finished difference Result 987 states and 1316 transitions. [2019-10-15 01:16:35,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:35,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-10-15 01:16:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:35,570 INFO L225 Difference]: With dead ends: 987 [2019-10-15 01:16:35,570 INFO L226 Difference]: Without dead ends: 633 [2019-10-15 01:16:35,573 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-15 01:16:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 632. [2019-10-15 01:16:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2019-10-15 01:16:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 856 transitions. [2019-10-15 01:16:35,603 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 856 transitions. Word has length 199 [2019-10-15 01:16:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:35,604 INFO L462 AbstractCegarLoop]: Abstraction has 632 states and 856 transitions. [2019-10-15 01:16:35,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 856 transitions. [2019-10-15 01:16:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:16:35,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:35,610 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:35,611 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:35,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:35,611 INFO L82 PathProgramCache]: Analyzing trace with hash -245674181, now seen corresponding path program 1 times [2019-10-15 01:16:35,612 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:35,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691405119] [2019-10-15 01:16:35,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:35,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:35,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:35,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691405119] [2019-10-15 01:16:35,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:35,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:35,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491371839] [2019-10-15 01:16:35,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:35,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:35,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:35,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:35,936 INFO L87 Difference]: Start difference. First operand 632 states and 856 transitions. Second operand 3 states. [2019-10-15 01:16:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:36,058 INFO L93 Difference]: Finished difference Result 1242 states and 1713 transitions. [2019-10-15 01:16:36,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:36,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-15 01:16:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:36,066 INFO L225 Difference]: With dead ends: 1242 [2019-10-15 01:16:36,067 INFO L226 Difference]: Without dead ends: 675 [2019-10-15 01:16:36,071 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2019-10-15 01:16:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 674. [2019-10-15 01:16:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-15 01:16:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 928 transitions. [2019-10-15 01:16:36,120 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 928 transitions. Word has length 205 [2019-10-15 01:16:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:36,122 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 928 transitions. [2019-10-15 01:16:36,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 928 transitions. [2019-10-15 01:16:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-15 01:16:36,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:36,130 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] [2019-10-15 01:16:36,130 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:36,131 INFO L82 PathProgramCache]: Analyzing trace with hash 716085072, now seen corresponding path program 1 times [2019-10-15 01:16:36,132 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:36,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607025203] [2019-10-15 01:16:36,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:36,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:36,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:16:36,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607025203] [2019-10-15 01:16:36,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:36,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:16:36,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675806243] [2019-10-15 01:16:36,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:16:36,576 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:16:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:16:36,576 INFO L87 Difference]: Start difference. First operand 674 states and 928 transitions. Second operand 11 states. [2019-10-15 01:16:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:43,579 INFO L93 Difference]: Finished difference Result 3690 states and 5193 transitions. [2019-10-15 01:16:43,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-15 01:16:43,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 206 [2019-10-15 01:16:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:43,621 INFO L225 Difference]: With dead ends: 3690 [2019-10-15 01:16:43,621 INFO L226 Difference]: Without dead ends: 3349 [2019-10-15 01:16:43,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:16:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2019-10-15 01:16:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 3328. [2019-10-15 01:16:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3328 states. [2019-10-15 01:16:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4577 transitions. [2019-10-15 01:16:43,829 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4577 transitions. Word has length 206 [2019-10-15 01:16:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:43,830 INFO L462 AbstractCegarLoop]: Abstraction has 3328 states and 4577 transitions. [2019-10-15 01:16:43,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:16:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4577 transitions. [2019-10-15 01:16:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-15 01:16:43,835 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:43,835 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] [2019-10-15 01:16:43,835 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2127126410, now seen corresponding path program 1 times [2019-10-15 01:16:43,836 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:43,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220563912] [2019-10-15 01:16:43,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:43,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:43,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:16:44,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220563912] [2019-10-15 01:16:44,253 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:44,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-15 01:16:44,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617022626] [2019-10-15 01:16:44,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 01:16:44,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:44,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 01:16:44,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:16:44,255 INFO L87 Difference]: Start difference. First operand 3328 states and 4577 transitions. Second operand 20 states. [2019-10-15 01:16:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:44,965 INFO L93 Difference]: Finished difference Result 6287 states and 8770 transitions. [2019-10-15 01:16:44,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 01:16:44,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 207 [2019-10-15 01:16:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:44,996 INFO L225 Difference]: With dead ends: 6287 [2019-10-15 01:16:44,996 INFO L226 Difference]: Without dead ends: 3274 [2019-10-15 01:16:45,017 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 [2019-10-15 01:16:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2019-10-15 01:16:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3272. [2019-10-15 01:16:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3272 states. [2019-10-15 01:16:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4493 transitions. [2019-10-15 01:16:45,241 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4493 transitions. Word has length 207 [2019-10-15 01:16:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:45,242 INFO L462 AbstractCegarLoop]: Abstraction has 3272 states and 4493 transitions. [2019-10-15 01:16:45,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 01:16:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4493 transitions. [2019-10-15 01:16:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-15 01:16:45,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:45,252 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] [2019-10-15 01:16:45,252 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash 264077804, now seen corresponding path program 1 times [2019-10-15 01:16:45,253 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:45,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430463984] [2019-10-15 01:16:45,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:45,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:45,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:16:45,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430463984] [2019-10-15 01:16:45,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:45,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:16:45,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464894605] [2019-10-15 01:16:45,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:16:45,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:45,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:16:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:16:45,562 INFO L87 Difference]: Start difference. First operand 3272 states and 4493 transitions. Second operand 6 states. [2019-10-15 01:16:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:46,595 INFO L93 Difference]: Finished difference Result 9521 states and 13248 transitions. [2019-10-15 01:16:46,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:16:46,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2019-10-15 01:16:46,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:46,641 INFO L225 Difference]: With dead ends: 9521 [2019-10-15 01:16:46,641 INFO L226 Difference]: Without dead ends: 6631 [2019-10-15 01:16:46,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:16:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2019-10-15 01:16:46,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6560. [2019-10-15 01:16:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6560 states. [2019-10-15 01:16:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6560 states to 6560 states and 9109 transitions. [2019-10-15 01:16:47,032 INFO L78 Accepts]: Start accepts. Automaton has 6560 states and 9109 transitions. Word has length 216 [2019-10-15 01:16:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:47,033 INFO L462 AbstractCegarLoop]: Abstraction has 6560 states and 9109 transitions. [2019-10-15 01:16:47,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:16:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6560 states and 9109 transitions. [2019-10-15 01:16:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-15 01:16:47,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:47,039 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] [2019-10-15 01:16:47,039 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1993707159, now seen corresponding path program 1 times [2019-10-15 01:16:47,040 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:47,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690991429] [2019-10-15 01:16:47,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:47,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:47,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:16:47,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690991429] [2019-10-15 01:16:47,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:47,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:16:47,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741966471] [2019-10-15 01:16:47,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:16:47,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:47,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:16:47,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:16:47,251 INFO L87 Difference]: Start difference. First operand 6560 states and 9109 transitions. Second operand 5 states. [2019-10-15 01:16:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:49,490 INFO L93 Difference]: Finished difference Result 24907 states and 35520 transitions. [2019-10-15 01:16:49,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:16:49,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2019-10-15 01:16:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:49,624 INFO L225 Difference]: With dead ends: 24907 [2019-10-15 01:16:49,624 INFO L226 Difference]: Without dead ends: 19044 [2019-10-15 01:16:49,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:16:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2019-10-15 01:16:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 18948. [2019-10-15 01:16:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18948 states. [2019-10-15 01:16:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18948 states to 18948 states and 26778 transitions. [2019-10-15 01:16:50,763 INFO L78 Accepts]: Start accepts. Automaton has 18948 states and 26778 transitions. Word has length 217 [2019-10-15 01:16:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:50,764 INFO L462 AbstractCegarLoop]: Abstraction has 18948 states and 26778 transitions. [2019-10-15 01:16:50,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:16:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 18948 states and 26778 transitions. [2019-10-15 01:16:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-15 01:16:50,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:50,778 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] [2019-10-15 01:16:50,778 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1714484018, now seen corresponding path program 1 times [2019-10-15 01:16:50,779 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:50,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366656437] [2019-10-15 01:16:50,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:50,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:50,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:16:51,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366656437] [2019-10-15 01:16:51,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:51,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-15 01:16:51,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811937254] [2019-10-15 01:16:51,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-15 01:16:51,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-15 01:16:51,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:16:51,042 INFO L87 Difference]: Start difference. First operand 18948 states and 26778 transitions. Second operand 13 states. [2019-10-15 01:16:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:52,528 INFO L93 Difference]: Finished difference Result 36471 states and 51393 transitions. [2019-10-15 01:16:52,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:16:52,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 217 [2019-10-15 01:16:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:52,623 INFO L225 Difference]: With dead ends: 36471 [2019-10-15 01:16:52,623 INFO L226 Difference]: Without dead ends: 18872 [2019-10-15 01:16:52,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:16:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18872 states. [2019-10-15 01:16:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18872 to 18820. [2019-10-15 01:16:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18820 states. [2019-10-15 01:16:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 26387 transitions. [2019-10-15 01:16:53,598 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 26387 transitions. Word has length 217 [2019-10-15 01:16:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:53,599 INFO L462 AbstractCegarLoop]: Abstraction has 18820 states and 26387 transitions. [2019-10-15 01:16:53,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-15 01:16:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 26387 transitions. [2019-10-15 01:16:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 01:16:53,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:53,615 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] [2019-10-15 01:16:53,615 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:53,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1765180475, now seen corresponding path program 1 times [2019-10-15 01:16:53,616 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:53,616 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130995226] [2019-10-15 01:16:53,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:53,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:53,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:53,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130995226] [2019-10-15 01:16:53,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:53,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:53,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138795788] [2019-10-15 01:16:53,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:53,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:53,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:53,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:53,770 INFO L87 Difference]: Start difference. First operand 18820 states and 26387 transitions. Second operand 3 states. [2019-10-15 01:16:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:54,301 INFO L93 Difference]: Finished difference Result 37919 states and 53334 transitions. [2019-10-15 01:16:54,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:54,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2019-10-15 01:16:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:54,668 INFO L225 Difference]: With dead ends: 37919 [2019-10-15 01:16:54,668 INFO L226 Difference]: Without dead ends: 19164 [2019-10-15 01:16:54,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19164 states. [2019-10-15 01:16:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19164 to 19160. [2019-10-15 01:16:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19160 states. [2019-10-15 01:16:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19160 states to 19160 states and 27008 transitions. [2019-10-15 01:16:55,451 INFO L78 Accepts]: Start accepts. Automaton has 19160 states and 27008 transitions. Word has length 246 [2019-10-15 01:16:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:55,452 INFO L462 AbstractCegarLoop]: Abstraction has 19160 states and 27008 transitions. [2019-10-15 01:16:55,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19160 states and 27008 transitions. [2019-10-15 01:16:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-15 01:16:55,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:55,478 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, 1] [2019-10-15 01:16:55,478 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1332042394, now seen corresponding path program 1 times [2019-10-15 01:16:55,479 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:55,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960752540] [2019-10-15 01:16:55,479 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:55,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:55,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:55,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960752540] [2019-10-15 01:16:55,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:55,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:55,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632466824] [2019-10-15 01:16:55,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:55,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:55,641 INFO L87 Difference]: Start difference. First operand 19160 states and 27008 transitions. Second operand 3 states. [2019-10-15 01:16:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:56,793 INFO L93 Difference]: Finished difference Result 38899 states and 55133 transitions. [2019-10-15 01:16:56,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:56,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2019-10-15 01:16:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:56,872 INFO L225 Difference]: With dead ends: 38899 [2019-10-15 01:16:56,872 INFO L226 Difference]: Without dead ends: 19804 [2019-10-15 01:16:56,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19804 states. [2019-10-15 01:16:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19804 to 19800. [2019-10-15 01:16:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19800 states. [2019-10-15 01:16:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19800 states to 19800 states and 28178 transitions. [2019-10-15 01:16:57,622 INFO L78 Accepts]: Start accepts. Automaton has 19800 states and 28178 transitions. Word has length 247 [2019-10-15 01:16:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:57,624 INFO L462 AbstractCegarLoop]: Abstraction has 19800 states and 28178 transitions. [2019-10-15 01:16:57,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 19800 states and 28178 transitions. [2019-10-15 01:16:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-15 01:16:57,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:57,646 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] [2019-10-15 01:16:57,646 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:57,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash -192251923, now seen corresponding path program 1 times [2019-10-15 01:16:57,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:57,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450111221] [2019-10-15 01:16:57,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:57,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:57,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:16:58,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450111221] [2019-10-15 01:16:58,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:58,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:16:58,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464451384] [2019-10-15 01:16:58,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:16:58,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:16:58,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:16:58,047 INFO L87 Difference]: Start difference. First operand 19800 states and 28178 transitions. Second operand 8 states.