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_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:59,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:59,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:59,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:59,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:59,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:59,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:59,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:59,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:59,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:59,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:59,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:59,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:59,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:59,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:59,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:59,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:59,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:59,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:59,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:59,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:59,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:59,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:59,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:59,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:59,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:59,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:59,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:59,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:59,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:59,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:59,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:59,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:59,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:59,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:59,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:59,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:59,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:59,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:59,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:59,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:59,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:59,891 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:59,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:59,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:59,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:59,893 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:59,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:59,893 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:59,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:59,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:59,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:59,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:59,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:59,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:59,895 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:59,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:59,895 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:59,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:59,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:59,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:59,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:59,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:59,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:59,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:59,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:59,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:59,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:59,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:59,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:59,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:17:00,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:17:00,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:17:00,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:17:00,226 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:17:00,226 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:17:00,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2019-10-13 21:17:00,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35ccdc9bb/181759230f344bfa91bfd00553021ba2/FLAG6e9bec924 [2019-10-13 21:17:00,981 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:17:00,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2019-10-13 21:17:01,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35ccdc9bb/181759230f344bfa91bfd00553021ba2/FLAG6e9bec924 [2019-10-13 21:17:01,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35ccdc9bb/181759230f344bfa91bfd00553021ba2 [2019-10-13 21:17:01,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:17:01,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:17:01,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:01,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:17:01,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:17:01,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:01" (1/1) ... [2019-10-13 21:17:01,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c19cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:01, skipping insertion in model container [2019-10-13 21:17:01,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:01" (1/1) ... [2019-10-13 21:17:01,216 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:17:01,311 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:17:02,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:02,157 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:17:02,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:02,351 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:17:02,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02 WrapperNode [2019-10-13 21:17:02,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:02,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:17:02,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:17:02,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:17:02,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... [2019-10-13 21:17:02,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:17:02,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:17:02,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:17:02,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:17:02,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:17:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:17:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:17:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:17:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:17:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:17:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:17:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:17:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:17:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:17:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:17:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:17:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:02,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:02,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:02,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:17:02,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:17:02,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:17:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:17:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:17:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:17:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:17:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:17:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:17:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:17:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:17:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:17:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:17:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:17:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:17:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:17:02,658 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:17:02,658 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:17:02,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:17:02,658 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:17:02,658 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:17:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:17:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:17:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:17:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:17:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:17:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:17:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:17:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:17:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:17:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:17:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:17:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:17:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:17:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:17:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:17:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:17:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:17:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:17:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:17:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:17:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:17:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:17:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:17:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:17:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:17:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:17:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:17:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:17:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:17:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:17:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:17:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:17:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:17:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:17:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:17:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:17:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:17:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:17:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:17:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:17:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:17:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:17:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:17:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:17:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:17:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:17:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:17:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:17:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:17:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:17:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:17:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:17:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:17:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:17:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:17:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:17:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:17:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:17:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:17:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:17:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:17:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:17:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:17:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:17:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:17:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:17:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:17:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:17:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:17:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:17:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:17:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:17:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:17:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:17:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:17:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:17:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:17:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:17:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:17:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:17:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:17:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:17:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:17:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:17:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:17:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:17:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:17:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:17:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:17:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:17:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:17:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:17:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:17:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:17:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:17:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:17:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:17:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:17:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:17:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:17:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:17:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:17:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:17:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:17:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:17:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:17:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:17:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:17:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:17:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:17:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:17:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:17:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:17:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:17:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:17:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:17:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:17:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:17:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:17:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:17:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:17:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:17:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:17:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:17:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:17:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:17:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:17:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:17:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:17:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:17:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:17:05,059 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:17:05,059 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:17:05,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:05 BoogieIcfgContainer [2019-10-13 21:17:05,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:17:05,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:17:05,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:17:05,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:17:05,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:01" (1/3) ... [2019-10-13 21:17:05,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7836944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:05, skipping insertion in model container [2019-10-13 21:17:05,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:02" (2/3) ... [2019-10-13 21:17:05,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7836944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:05, skipping insertion in model container [2019-10-13 21:17:05,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:05" (3/3) ... [2019-10-13 21:17:05,070 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2019-10-13 21:17:05,081 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:17:05,091 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:17:05,103 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:17:05,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:17:05,147 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:17:05,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:17:05,147 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:17:05,147 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:17:05,147 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:17:05,147 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:17:05,148 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:17:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states. [2019-10-13 21:17:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:17:05,220 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:05,221 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:05,223 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:05,229 INFO L82 PathProgramCache]: Analyzing trace with hash 505094075, now seen corresponding path program 1 times [2019-10-13 21:17:05,239 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:05,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734830724] [2019-10-13 21:17:05,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:05,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:05,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:05,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734830724] [2019-10-13 21:17:05,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:05,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:17:05,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261598584] [2019-10-13 21:17:05,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:17:05,890 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:05,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:17:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:05,908 INFO L87 Difference]: Start difference. First operand 432 states. Second operand 2 states. [2019-10-13 21:17:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:05,992 INFO L93 Difference]: Finished difference Result 573 states and 766 transitions. [2019-10-13 21:17:05,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:17:05,996 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 176 [2019-10-13 21:17:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:06,030 INFO L225 Difference]: With dead ends: 573 [2019-10-13 21:17:06,030 INFO L226 Difference]: Without dead ends: 387 [2019-10-13 21:17:06,041 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2019-10-13 21:17:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2019-10-13 21:17:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-10-13 21:17:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 520 transitions. [2019-10-13 21:17:06,141 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 520 transitions. Word has length 176 [2019-10-13 21:17:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:06,143 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 520 transitions. [2019-10-13 21:17:06,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:17:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 520 transitions. [2019-10-13 21:17:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:17:06,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:06,149 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:06,149 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:06,150 INFO L82 PathProgramCache]: Analyzing trace with hash -3320050, now seen corresponding path program 1 times [2019-10-13 21:17:06,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:06,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763386050] [2019-10-13 21:17:06,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:06,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763386050] [2019-10-13 21:17:06,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:06,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:06,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441362750] [2019-10-13 21:17:06,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:06,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:06,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:06,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:06,430 INFO L87 Difference]: Start difference. First operand 387 states and 520 transitions. Second operand 3 states. [2019-10-13 21:17:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:06,520 INFO L93 Difference]: Finished difference Result 556 states and 734 transitions. [2019-10-13 21:17:06,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:06,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 21:17:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:06,530 INFO L225 Difference]: With dead ends: 556 [2019-10-13 21:17:06,530 INFO L226 Difference]: Without dead ends: 390 [2019-10-13 21:17:06,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2019-10-13 21:17:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2019-10-13 21:17:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2019-10-13 21:17:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 522 transitions. [2019-10-13 21:17:06,575 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 522 transitions. Word has length 177 [2019-10-13 21:17:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:06,576 INFO L462 AbstractCegarLoop]: Abstraction has 389 states and 522 transitions. [2019-10-13 21:17:06,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 522 transitions. [2019-10-13 21:17:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:17:06,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:06,584 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:06,584 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:06,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2139517470, now seen corresponding path program 1 times [2019-10-13 21:17:06,585 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:06,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666187474] [2019-10-13 21:17:06,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:06,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666187474] [2019-10-13 21:17:06,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:06,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:06,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460882010] [2019-10-13 21:17:06,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:06,841 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:06,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:06,842 INFO L87 Difference]: Start difference. First operand 389 states and 522 transitions. Second operand 3 states. [2019-10-13 21:17:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:06,879 INFO L93 Difference]: Finished difference Result 752 states and 1039 transitions. [2019-10-13 21:17:06,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:06,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-10-13 21:17:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:06,884 INFO L225 Difference]: With dead ends: 752 [2019-10-13 21:17:06,884 INFO L226 Difference]: Without dead ends: 428 [2019-10-13 21:17:06,886 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2019-10-13 21:17:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2019-10-13 21:17:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-13 21:17:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 588 transitions. [2019-10-13 21:17:06,907 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 588 transitions. Word has length 183 [2019-10-13 21:17:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:06,908 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 588 transitions. [2019-10-13 21:17:06,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 588 transitions. [2019-10-13 21:17:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:17:06,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:06,916 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:06,916 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:06,917 INFO L82 PathProgramCache]: Analyzing trace with hash 204479473, now seen corresponding path program 1 times [2019-10-13 21:17:06,918 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:06,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707364061] [2019-10-13 21:17:06,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:07,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707364061] [2019-10-13 21:17:07,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:07,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:17:07,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473409661] [2019-10-13 21:17:07,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:17:07,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:07,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:17:07,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:17:07,242 INFO L87 Difference]: Start difference. First operand 427 states and 588 transitions. Second operand 11 states. [2019-10-13 21:17:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:10,618 INFO L93 Difference]: Finished difference Result 1577 states and 2140 transitions. [2019-10-13 21:17:10,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 21:17:10,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 184 [2019-10-13 21:17:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:10,629 INFO L225 Difference]: With dead ends: 1577 [2019-10-13 21:17:10,629 INFO L226 Difference]: Without dead ends: 1304 [2019-10-13 21:17:10,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:17:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2019-10-13 21:17:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1289. [2019-10-13 21:17:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2019-10-13 21:17:10,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1717 transitions. [2019-10-13 21:17:10,711 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1717 transitions. Word has length 184 [2019-10-13 21:17:10,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:10,712 INFO L462 AbstractCegarLoop]: Abstraction has 1289 states and 1717 transitions. [2019-10-13 21:17:10,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:17:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1717 transitions. [2019-10-13 21:17:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:17:10,716 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:10,716 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:10,717 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:10,717 INFO L82 PathProgramCache]: Analyzing trace with hash -691241968, now seen corresponding path program 1 times [2019-10-13 21:17:10,717 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:10,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200749489] [2019-10-13 21:17:10,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:11,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200749489] [2019-10-13 21:17:11,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:11,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:17:11,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108752601] [2019-10-13 21:17:11,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:17:11,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:11,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:17:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:17:11,015 INFO L87 Difference]: Start difference. First operand 1289 states and 1717 transitions. Second operand 16 states. [2019-10-13 21:17:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:11,457 INFO L93 Difference]: Finished difference Result 2093 states and 2769 transitions. [2019-10-13 21:17:11,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:17:11,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 185 [2019-10-13 21:17:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:11,466 INFO L225 Difference]: With dead ends: 2093 [2019-10-13 21:17:11,466 INFO L226 Difference]: Without dead ends: 1082 [2019-10-13 21:17:11,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:17:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2019-10-13 21:17:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1003. [2019-10-13 21:17:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2019-10-13 21:17:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1331 transitions. [2019-10-13 21:17:11,522 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1331 transitions. Word has length 185 [2019-10-13 21:17:11,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:11,523 INFO L462 AbstractCegarLoop]: Abstraction has 1003 states and 1331 transitions. [2019-10-13 21:17:11,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:17:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1331 transitions. [2019-10-13 21:17:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:17:11,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:11,528 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:11,528 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:11,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1574861770, now seen corresponding path program 1 times [2019-10-13 21:17:11,529 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:11,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030444576] [2019-10-13 21:17:11,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:11,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:11,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:11,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030444576] [2019-10-13 21:17:11,697 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:11,697 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:17:11,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306109518] [2019-10-13 21:17:11,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:17:11,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:17:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:17:11,699 INFO L87 Difference]: Start difference. First operand 1003 states and 1331 transitions. Second operand 6 states. [2019-10-13 21:17:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:12,319 INFO L93 Difference]: Finished difference Result 2698 states and 3565 transitions. [2019-10-13 21:17:12,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:17:12,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2019-10-13 21:17:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:12,348 INFO L225 Difference]: With dead ends: 2698 [2019-10-13 21:17:12,349 INFO L226 Difference]: Without dead ends: 1997 [2019-10-13 21:17:12,358 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:17:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2019-10-13 21:17:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1926. [2019-10-13 21:17:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1926 states. [2019-10-13 21:17:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2579 transitions. [2019-10-13 21:17:12,518 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2579 transitions. Word has length 194 [2019-10-13 21:17:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:12,521 INFO L462 AbstractCegarLoop]: Abstraction has 1926 states and 2579 transitions. [2019-10-13 21:17:12,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:17:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2579 transitions. [2019-10-13 21:17:12,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:17:12,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:12,531 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:12,531 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:12,532 INFO L82 PathProgramCache]: Analyzing trace with hash 813693208, now seen corresponding path program 1 times [2019-10-13 21:17:12,532 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:12,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262178277] [2019-10-13 21:17:12,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:12,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:12,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:12,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262178277] [2019-10-13 21:17:12,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:12,912 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:17:12,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895834662] [2019-10-13 21:17:12,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:17:12,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:17:12,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:17:12,915 INFO L87 Difference]: Start difference. First operand 1926 states and 2579 transitions. Second operand 9 states. [2019-10-13 21:17:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:13,337 INFO L93 Difference]: Finished difference Result 3351 states and 4390 transitions. [2019-10-13 21:17:13,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:17:13,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2019-10-13 21:17:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:13,351 INFO L225 Difference]: With dead ends: 3351 [2019-10-13 21:17:13,352 INFO L226 Difference]: Without dead ends: 1944 [2019-10-13 21:17:13,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:17:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2019-10-13 21:17:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1914. [2019-10-13 21:17:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2019-10-13 21:17:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2553 transitions. [2019-10-13 21:17:13,461 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2553 transitions. Word has length 195 [2019-10-13 21:17:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:13,461 INFO L462 AbstractCegarLoop]: Abstraction has 1914 states and 2553 transitions. [2019-10-13 21:17:13,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:17:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2553 transitions. [2019-10-13 21:17:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:17:13,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:13,467 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:13,468 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1400469327, now seen corresponding path program 1 times [2019-10-13 21:17:13,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:13,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087236140] [2019-10-13 21:17:13,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:13,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087236140] [2019-10-13 21:17:13,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:13,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:17:13,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978807593] [2019-10-13 21:17:13,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:17:13,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:13,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:17:13,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:17:13,619 INFO L87 Difference]: Start difference. First operand 1914 states and 2553 transitions. Second operand 5 states. [2019-10-13 21:17:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:14,773 INFO L93 Difference]: Finished difference Result 6123 states and 8054 transitions. [2019-10-13 21:17:14,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:14,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2019-10-13 21:17:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:14,802 INFO L225 Difference]: With dead ends: 6123 [2019-10-13 21:17:14,802 INFO L226 Difference]: Without dead ends: 4496 [2019-10-13 21:17:14,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:17:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2019-10-13 21:17:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4239. [2019-10-13 21:17:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4239 states. [2019-10-13 21:17:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 5663 transitions. [2019-10-13 21:17:15,058 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 5663 transitions. Word has length 195 [2019-10-13 21:17:15,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:15,059 INFO L462 AbstractCegarLoop]: Abstraction has 4239 states and 5663 transitions. [2019-10-13 21:17:15,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:17:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 5663 transitions. [2019-10-13 21:17:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:17:15,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:15,075 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:15,075 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:15,076 INFO L82 PathProgramCache]: Analyzing trace with hash -754431274, now seen corresponding path program 1 times [2019-10-13 21:17:15,076 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:15,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655970834] [2019-10-13 21:17:15,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:15,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655970834] [2019-10-13 21:17:15,263 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:15,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:15,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3671296] [2019-10-13 21:17:15,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:15,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:15,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:15,265 INFO L87 Difference]: Start difference. First operand 4239 states and 5663 transitions. Second operand 3 states. [2019-10-13 21:17:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:15,444 INFO L93 Difference]: Finished difference Result 8725 states and 11838 transitions. [2019-10-13 21:17:15,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:15,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2019-10-13 21:17:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:15,474 INFO L225 Difference]: With dead ends: 8725 [2019-10-13 21:17:15,474 INFO L226 Difference]: Without dead ends: 4551 [2019-10-13 21:17:15,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2019-10-13 21:17:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4547. [2019-10-13 21:17:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4547 states. [2019-10-13 21:17:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6236 transitions. [2019-10-13 21:17:15,821 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6236 transitions. Word has length 224 [2019-10-13 21:17:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:15,822 INFO L462 AbstractCegarLoop]: Abstraction has 4547 states and 6236 transitions. [2019-10-13 21:17:15,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6236 transitions. [2019-10-13 21:17:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:17:15,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:15,843 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:15,844 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:15,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1121099591, now seen corresponding path program 1 times [2019-10-13 21:17:15,845 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:15,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258230162] [2019-10-13 21:17:15,846 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,846 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:16,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258230162] [2019-10-13 21:17:16,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:16,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:16,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128127796] [2019-10-13 21:17:16,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:16,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:16,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:16,065 INFO L87 Difference]: Start difference. First operand 4547 states and 6236 transitions. Second operand 3 states. [2019-10-13 21:17:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:16,292 INFO L93 Difference]: Finished difference Result 9609 states and 13493 transitions. [2019-10-13 21:17:16,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:16,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-13 21:17:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:16,327 INFO L225 Difference]: With dead ends: 9609 [2019-10-13 21:17:16,327 INFO L226 Difference]: Without dead ends: 5127 [2019-10-13 21:17:16,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:16,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2019-10-13 21:17:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5123. [2019-10-13 21:17:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5123 states. [2019-10-13 21:17:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 7310 transitions. [2019-10-13 21:17:16,632 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 7310 transitions. Word has length 225 [2019-10-13 21:17:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:16,632 INFO L462 AbstractCegarLoop]: Abstraction has 5123 states and 7310 transitions. [2019-10-13 21:17:16,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 7310 transitions. [2019-10-13 21:17:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:17:16,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:16,651 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 21:17:16,652 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1175417608, now seen corresponding path program 1 times [2019-10-13 21:17:16,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:16,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594972218] [2019-10-13 21:17:16,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:16,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:16,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:17,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594972218] [2019-10-13 21:17:17,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:17,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:17,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164723041] [2019-10-13 21:17:17,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:17,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:17,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:17,020 INFO L87 Difference]: Start difference. First operand 5123 states and 7310 transitions. Second operand 8 states. [2019-10-13 21:17:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:21,000 INFO L93 Difference]: Finished difference Result 15735 states and 23920 transitions. [2019-10-13 21:17:21,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:17:21,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2019-10-13 21:17:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:21,128 INFO L225 Difference]: With dead ends: 15735 [2019-10-13 21:17:21,128 INFO L226 Difference]: Without dead ends: 10677 [2019-10-13 21:17:21,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:17:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2019-10-13 21:17:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 7207. [2019-10-13 21:17:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7207 states. [2019-10-13 21:17:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7207 states to 7207 states and 11574 transitions. [2019-10-13 21:17:21,700 INFO L78 Accepts]: Start accepts. Automaton has 7207 states and 11574 transitions. Word has length 232 [2019-10-13 21:17:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:21,701 INFO L462 AbstractCegarLoop]: Abstraction has 7207 states and 11574 transitions. [2019-10-13 21:17:21,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:17:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7207 states and 11574 transitions. [2019-10-13 21:17:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:17:21,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:21,741 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 21:17:21,742 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:21,742 INFO L82 PathProgramCache]: Analyzing trace with hash 497412496, now seen corresponding path program 1 times [2019-10-13 21:17:21,742 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:21,743 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979988517] [2019-10-13 21:17:21,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:21,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:21,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:22,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979988517] [2019-10-13 21:17:22,080 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:22,080 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:22,080 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338242716] [2019-10-13 21:17:22,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:22,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:22,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:22,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:22,082 INFO L87 Difference]: Start difference. First operand 7207 states and 11574 transitions. Second operand 8 states. [2019-10-13 21:17:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:25,974 INFO L93 Difference]: Finished difference Result 22523 states and 38960 transitions. [2019-10-13 21:17:25,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:17:25,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2019-10-13 21:17:25,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:26,071 INFO L225 Difference]: With dead ends: 22523 [2019-10-13 21:17:26,071 INFO L226 Difference]: Without dead ends: 15381 [2019-10-13 21:17:26,113 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:17:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15381 states. [2019-10-13 21:17:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15381 to 11495. [2019-10-13 21:17:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11495 states. [2019-10-13 21:17:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11495 states to 11495 states and 20942 transitions. [2019-10-13 21:17:26,880 INFO L78 Accepts]: Start accepts. Automaton has 11495 states and 20942 transitions. Word has length 233 [2019-10-13 21:17:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:26,880 INFO L462 AbstractCegarLoop]: Abstraction has 11495 states and 20942 transitions. [2019-10-13 21:17:26,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:17:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 11495 states and 20942 transitions. [2019-10-13 21:17:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:17:26,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:26,985 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 21:17:26,985 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:26,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash -942013428, now seen corresponding path program 1 times [2019-10-13 21:17:26,986 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:26,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299473396] [2019-10-13 21:17:26,986 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:26,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:26,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:27,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299473396] [2019-10-13 21:17:27,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:27,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:27,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249342813] [2019-10-13 21:17:27,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:27,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:27,338 INFO L87 Difference]: Start difference. First operand 11495 states and 20942 transitions. Second operand 8 states.