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_spec8_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:32,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:32,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:32,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:32,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:32,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:32,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:32,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:32,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:32,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:32,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:32,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:32,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:32,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:32,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:32,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:32,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:32,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:32,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:32,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:32,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:32,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:32,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:32,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:32,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:32,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:32,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:32,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:32,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:32,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:32,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:32,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:32,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:32,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:32,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:32,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:32,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:32,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:32,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:32,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:32,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:32,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:17:32,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:32,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:32,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:32,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:32,276 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:32,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:32,276 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:32,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:32,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:32,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:32,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:32,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:32,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:32,278 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:32,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:32,278 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:32,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:32,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:32,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:32,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:32,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:32,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:32,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:32,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:32,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:32,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:32,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:32,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:32,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:17:32,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:32,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:32,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:32,620 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:32,621 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:32,621 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product32.cil.c [2019-10-15 01:17:32,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084c916e1/ab1d603c0ffe4ba3a0e42022622ad58f/FLAG921fb190e [2019-10-15 01:17:33,276 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:33,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product32.cil.c [2019-10-15 01:17:33,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084c916e1/ab1d603c0ffe4ba3a0e42022622ad58f/FLAG921fb190e [2019-10-15 01:17:33,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084c916e1/ab1d603c0ffe4ba3a0e42022622ad58f [2019-10-15 01:17:33,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:33,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:33,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:33,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:33,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:33,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:33" (1/1) ... [2019-10-15 01:17:33,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8a69ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:33, skipping insertion in model container [2019-10-15 01:17:33,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:33" (1/1) ... [2019-10-15 01:17:33,533 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:33,617 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:34,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:34,324 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:34,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:34,596 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:34,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34 WrapperNode [2019-10-15 01:17:34,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:34,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:34,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:34,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:34,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:34,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:34,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:34,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:34,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:34,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:34,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:34,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:34,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:17:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:17:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:17:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:17:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:17:34,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:34,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:17:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:17:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:17:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:17:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:17:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:17:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:17:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:17:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:17:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:17:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:17:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:17:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:37,092 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:37,094 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:37,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:37 BoogieIcfgContainer [2019-10-15 01:17:37,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:37,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:37,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:37,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:37,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:33" (1/3) ... [2019-10-15 01:17:37,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8864267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:37, skipping insertion in model container [2019-10-15 01:17:37,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (2/3) ... [2019-10-15 01:17:37,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8864267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:37, skipping insertion in model container [2019-10-15 01:17:37,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:37" (3/3) ... [2019-10-15 01:17:37,109 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product32.cil.c [2019-10-15 01:17:37,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:37,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:37,141 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:37,183 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:37,183 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:37,184 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:37,192 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:37,193 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:37,193 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:37,193 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:37,193 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states. [2019-10-15 01:17:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:17:37,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:37,274 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:37,278 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1870939894, now seen corresponding path program 1 times [2019-10-15 01:17:37,293 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:37,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863063637] [2019-10-15 01:17:37,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:37,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:37,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:38,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863063637] [2019-10-15 01:17:38,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:38,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:17:38,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386574702] [2019-10-15 01:17:38,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:17:38,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:38,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:17:38,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:38,040 INFO L87 Difference]: Start difference. First operand 641 states. Second operand 2 states. [2019-10-15 01:17:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:38,148 INFO L93 Difference]: Finished difference Result 912 states and 1235 transitions. [2019-10-15 01:17:38,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:17:38,150 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-15 01:17:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:38,188 INFO L225 Difference]: With dead ends: 912 [2019-10-15 01:17:38,188 INFO L226 Difference]: Without dead ends: 584 [2019-10-15 01:17:38,201 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-15 01:17:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2019-10-15 01:17:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-15 01:17:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 796 transitions. [2019-10-15 01:17:38,335 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 796 transitions. Word has length 167 [2019-10-15 01:17:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:38,339 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 796 transitions. [2019-10-15 01:17:38,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:17:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 796 transitions. [2019-10-15 01:17:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:17:38,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:38,351 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:38,352 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash 749800882, now seen corresponding path program 1 times [2019-10-15 01:17:38,353 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:38,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168574163] [2019-10-15 01:17:38,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:38,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168574163] [2019-10-15 01:17:38,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:38,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:38,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877747968] [2019-10-15 01:17:38,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:38,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:38,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:38,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:38,733 INFO L87 Difference]: Start difference. First operand 584 states and 796 transitions. Second operand 3 states. [2019-10-15 01:17:38,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:38,773 INFO L93 Difference]: Finished difference Result 895 states and 1200 transitions. [2019-10-15 01:17:38,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:38,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-15 01:17:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:38,780 INFO L225 Difference]: With dead ends: 895 [2019-10-15 01:17:38,780 INFO L226 Difference]: Without dead ends: 587 [2019-10-15 01:17:38,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2019-10-15 01:17:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 586. [2019-10-15 01:17:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-10-15 01:17:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 798 transitions. [2019-10-15 01:17:38,806 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 798 transitions. Word has length 168 [2019-10-15 01:17:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:38,807 INFO L462 AbstractCegarLoop]: Abstraction has 586 states and 798 transitions. [2019-10-15 01:17:38,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 798 transitions. [2019-10-15 01:17:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:17:38,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:38,811 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:38,811 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:38,812 INFO L82 PathProgramCache]: Analyzing trace with hash -307093278, now seen corresponding path program 1 times [2019-10-15 01:17:38,812 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:38,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280293632] [2019-10-15 01:17:38,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:38,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280293632] [2019-10-15 01:17:38,995 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:38,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:38,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779142179] [2019-10-15 01:17:38,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:38,997 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:38,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:38,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:38,997 INFO L87 Difference]: Start difference. First operand 586 states and 798 transitions. Second operand 3 states. [2019-10-15 01:17:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,030 INFO L93 Difference]: Finished difference Result 1150 states and 1597 transitions. [2019-10-15 01:17:39,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-10-15 01:17:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,035 INFO L225 Difference]: With dead ends: 1150 [2019-10-15 01:17:39,035 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:17:39,037 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:17:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-10-15 01:17:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:17:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 870 transitions. [2019-10-15 01:17:39,060 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 870 transitions. Word has length 178 [2019-10-15 01:17:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,062 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 870 transitions. [2019-10-15 01:17:39,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 870 transitions. [2019-10-15 01:17:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:17:39,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,066 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,066 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1018259140, now seen corresponding path program 1 times [2019-10-15 01:17:39,067 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067055384] [2019-10-15 01:17:39,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:39,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067055384] [2019-10-15 01:17:39,257 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:39,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:39,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401863501] [2019-10-15 01:17:39,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:39,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:39,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,259 INFO L87 Difference]: Start difference. First operand 628 states and 870 transitions. Second operand 3 states. [2019-10-15 01:17:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,301 INFO L93 Difference]: Finished difference Result 1273 states and 1808 transitions. [2019-10-15 01:17:39,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-15 01:17:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,307 INFO L225 Difference]: With dead ends: 1273 [2019-10-15 01:17:39,307 INFO L226 Difference]: Without dead ends: 710 [2019-10-15 01:17:39,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-10-15 01:17:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 709. [2019-10-15 01:17:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2019-10-15 01:17:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1008 transitions. [2019-10-15 01:17:39,349 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1008 transitions. Word has length 179 [2019-10-15 01:17:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,350 INFO L462 AbstractCegarLoop]: Abstraction has 709 states and 1008 transitions. [2019-10-15 01:17:39,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1008 transitions. [2019-10-15 01:17:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:17:39,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,355 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,355 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,355 INFO L82 PathProgramCache]: Analyzing trace with hash 826212994, now seen corresponding path program 1 times [2019-10-15 01:17:39,356 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963253461] [2019-10-15 01:17:39,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:39,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963253461] [2019-10-15 01:17:39,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:39,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:39,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262278695] [2019-10-15 01:17:39,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:39,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:39,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,497 INFO L87 Difference]: Start difference. First operand 709 states and 1008 transitions. Second operand 3 states. [2019-10-15 01:17:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,533 INFO L93 Difference]: Finished difference Result 1510 states and 2212 transitions. [2019-10-15 01:17:39,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-15 01:17:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,539 INFO L225 Difference]: With dead ends: 1510 [2019-10-15 01:17:39,539 INFO L226 Difference]: Without dead ends: 866 [2019-10-15 01:17:39,541 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-10-15 01:17:39,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 865. [2019-10-15 01:17:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2019-10-15 01:17:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1272 transitions. [2019-10-15 01:17:39,572 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1272 transitions. Word has length 180 [2019-10-15 01:17:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,573 INFO L462 AbstractCegarLoop]: Abstraction has 865 states and 1272 transitions. [2019-10-15 01:17:39,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1272 transitions. [2019-10-15 01:17:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:17:39,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,578 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,578 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash -384196708, now seen corresponding path program 1 times [2019-10-15 01:17:39,579 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519598891] [2019-10-15 01:17:39,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:39,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519598891] [2019-10-15 01:17:39,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:39,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:39,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673898556] [2019-10-15 01:17:39,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:39,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:39,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,778 INFO L87 Difference]: Start difference. First operand 865 states and 1272 transitions. Second operand 3 states. [2019-10-15 01:17:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,832 INFO L93 Difference]: Finished difference Result 1966 states and 2984 transitions. [2019-10-15 01:17:39,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-15 01:17:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,839 INFO L225 Difference]: With dead ends: 1966 [2019-10-15 01:17:39,839 INFO L226 Difference]: Without dead ends: 1166 [2019-10-15 01:17:39,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2019-10-15 01:17:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1165. [2019-10-15 01:17:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-10-15 01:17:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1776 transitions. [2019-10-15 01:17:39,897 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1776 transitions. Word has length 181 [2019-10-15 01:17:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,898 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1776 transitions. [2019-10-15 01:17:39,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1776 transitions. [2019-10-15 01:17:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:17:39,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,906 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,907 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,907 INFO L82 PathProgramCache]: Analyzing trace with hash 726848663, now seen corresponding path program 1 times [2019-10-15 01:17:39,907 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048148896] [2019-10-15 01:17:39,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:17:40,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048148896] [2019-10-15 01:17:40,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:40,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:40,100 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265527938] [2019-10-15 01:17:40,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:40,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,102 INFO L87 Difference]: Start difference. First operand 1165 states and 1776 transitions. Second operand 3 states. [2019-10-15 01:17:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:40,165 INFO L93 Difference]: Finished difference Result 1601 states and 2368 transitions. [2019-10-15 01:17:40,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:40,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-15 01:17:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:40,175 INFO L225 Difference]: With dead ends: 1601 [2019-10-15 01:17:40,175 INFO L226 Difference]: Without dead ends: 1306 [2019-10-15 01:17:40,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2019-10-15 01:17:40,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1305. [2019-10-15 01:17:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2019-10-15 01:17:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1973 transitions. [2019-10-15 01:17:40,249 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1973 transitions. Word has length 184 [2019-10-15 01:17:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:40,249 INFO L462 AbstractCegarLoop]: Abstraction has 1305 states and 1973 transitions. [2019-10-15 01:17:40,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1973 transitions. [2019-10-15 01:17:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-15 01:17:40,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:40,262 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:40,262 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash 512730866, now seen corresponding path program 1 times [2019-10-15 01:17:40,263 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:40,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671564854] [2019-10-15 01:17:40,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-15 01:17:40,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671564854] [2019-10-15 01:17:40,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:40,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:17:40,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732369530] [2019-10-15 01:17:40,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:17:40,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:40,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:17:40,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:17:40,618 INFO L87 Difference]: Start difference. First operand 1305 states and 1973 transitions. Second operand 6 states. [2019-10-15 01:17:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:41,373 INFO L93 Difference]: Finished difference Result 2958 states and 4439 transitions. [2019-10-15 01:17:41,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:17:41,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2019-10-15 01:17:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:41,397 INFO L225 Difference]: With dead ends: 2958 [2019-10-15 01:17:41,398 INFO L226 Difference]: Without dead ends: 2561 [2019-10-15 01:17:41,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:17:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2019-10-15 01:17:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2550. [2019-10-15 01:17:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2550 states. [2019-10-15 01:17:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3896 transitions. [2019-10-15 01:17:41,514 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3896 transitions. Word has length 329 [2019-10-15 01:17:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:41,514 INFO L462 AbstractCegarLoop]: Abstraction has 2550 states and 3896 transitions. [2019-10-15 01:17:41,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:17:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3896 transitions. [2019-10-15 01:17:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-15 01:17:41,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:41,531 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:41,532 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash -603308041, now seen corresponding path program 1 times [2019-10-15 01:17:41,533 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:41,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848954531] [2019-10-15 01:17:41,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-15 01:17:41,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848954531] [2019-10-15 01:17:41,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:41,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:17:41,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472361973] [2019-10-15 01:17:41,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:17:41,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:41,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:17:41,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:17:41,853 INFO L87 Difference]: Start difference. First operand 2550 states and 3896 transitions. Second operand 11 states. [2019-10-15 01:17:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:42,391 INFO L93 Difference]: Finished difference Result 3341 states and 4945 transitions. [2019-10-15 01:17:42,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:17:42,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 330 [2019-10-15 01:17:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:42,408 INFO L225 Difference]: With dead ends: 3341 [2019-10-15 01:17:42,408 INFO L226 Difference]: Without dead ends: 2524 [2019-10-15 01:17:42,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:17:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2019-10-15 01:17:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2520. [2019-10-15 01:17:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2520 states. [2019-10-15 01:17:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3845 transitions. [2019-10-15 01:17:42,524 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3845 transitions. Word has length 330 [2019-10-15 01:17:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:42,524 INFO L462 AbstractCegarLoop]: Abstraction has 2520 states and 3845 transitions. [2019-10-15 01:17:42,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:17:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3845 transitions. [2019-10-15 01:17:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2019-10-15 01:17:42,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:42,543 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:42,543 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:42,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash 221566312, now seen corresponding path program 1 times [2019-10-15 01:17:42,544 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:42,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466084798] [2019-10-15 01:17:42,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:42,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:42,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-15 01:17:42,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466084798] [2019-10-15 01:17:42,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:42,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:42,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56910451] [2019-10-15 01:17:42,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:42,825 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:42,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:42,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:42,825 INFO L87 Difference]: Start difference. First operand 2520 states and 3845 transitions. Second operand 3 states. [2019-10-15 01:17:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:42,969 INFO L93 Difference]: Finished difference Result 6129 states and 9587 transitions. [2019-10-15 01:17:42,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:42,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 373 [2019-10-15 01:17:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:42,990 INFO L225 Difference]: With dead ends: 6129 [2019-10-15 01:17:42,990 INFO L226 Difference]: Without dead ends: 3674 [2019-10-15 01:17:42,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2019-10-15 01:17:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3672. [2019-10-15 01:17:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2019-10-15 01:17:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5781 transitions. [2019-10-15 01:17:43,160 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5781 transitions. Word has length 373 [2019-10-15 01:17:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:43,161 INFO L462 AbstractCegarLoop]: Abstraction has 3672 states and 5781 transitions. [2019-10-15 01:17:43,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5781 transitions. [2019-10-15 01:17:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2019-10-15 01:17:43,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:43,181 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:43,181 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1395971108, now seen corresponding path program 1 times [2019-10-15 01:17:43,182 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:43,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204847139] [2019-10-15 01:17:43,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:43,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:43,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-15 01:17:43,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204847139] [2019-10-15 01:17:43,434 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:43,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:43,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081391085] [2019-10-15 01:17:43,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:43,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:43,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:43,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:43,437 INFO L87 Difference]: Start difference. First operand 3672 states and 5781 transitions. Second operand 3 states. [2019-10-15 01:17:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:43,686 INFO L93 Difference]: Finished difference Result 9617 states and 15427 transitions. [2019-10-15 01:17:43,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:43,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 374 [2019-10-15 01:17:43,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:43,721 INFO L225 Difference]: With dead ends: 9617 [2019-10-15 01:17:43,721 INFO L226 Difference]: Without dead ends: 6010 [2019-10-15 01:17:43,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2019-10-15 01:17:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 6008. [2019-10-15 01:17:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6008 states. [2019-10-15 01:17:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6008 states to 6008 states and 9653 transitions. [2019-10-15 01:17:44,010 INFO L78 Accepts]: Start accepts. Automaton has 6008 states and 9653 transitions. Word has length 374 [2019-10-15 01:17:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:44,012 INFO L462 AbstractCegarLoop]: Abstraction has 6008 states and 9653 transitions. [2019-10-15 01:17:44,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 6008 states and 9653 transitions. [2019-10-15 01:17:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2019-10-15 01:17:44,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:44,047 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:17:44,048 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:44,048 INFO L82 PathProgramCache]: Analyzing trace with hash 535304145, now seen corresponding path program 1 times [2019-10-15 01:17:44,048 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:44,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651068409] [2019-10-15 01:17:44,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:44,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:44,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:17:44,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651068409] [2019-10-15 01:17:44,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892985643] [2019-10-15 01:17:44,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:45,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 3895 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:45,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-15 01:17:45,717 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:46,764 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-10-15 01:17:46,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:47,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:47,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 01:17:47,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:47,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:17:47,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817943037] [2019-10-15 01:17:47,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:47,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:47,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:47,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:47,360 INFO L87 Difference]: Start difference. First operand 6008 states and 9653 transitions. Second operand 9 states. [2019-10-15 01:17:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:48,957 INFO L93 Difference]: Finished difference Result 11994 states and 19286 transitions. [2019-10-15 01:17:48,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:48,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 338 [2019-10-15 01:17:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:49,034 INFO L225 Difference]: With dead ends: 11994 [2019-10-15 01:17:49,035 INFO L226 Difference]: Without dead ends: 6022 [2019-10-15 01:17:49,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 665 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:17:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6022 states. [2019-10-15 01:17:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6022 to 6022. [2019-10-15 01:17:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6022 states. [2019-10-15 01:17:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 9671 transitions. [2019-10-15 01:17:49,415 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 9671 transitions. Word has length 338 [2019-10-15 01:17:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:49,415 INFO L462 AbstractCegarLoop]: Abstraction has 6022 states and 9671 transitions. [2019-10-15 01:17:49,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 9671 transitions. [2019-10-15 01:17:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2019-10-15 01:17:49,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:49,464 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:49,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:49,674 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:49,674 INFO L82 PathProgramCache]: Analyzing trace with hash -603175921, now seen corresponding path program 1 times [2019-10-15 01:17:49,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:49,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901499855] [2019-10-15 01:17:49,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:49,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:49,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:17:50,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901499855] [2019-10-15 01:17:50,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415048949] [2019-10-15 01:17:50,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:50,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 3896 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:50,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-15 01:17:51,137 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:51,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:51,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 01:17:51,983 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:51,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:17:51,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415020614] [2019-10-15 01:17:51,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:51,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:51,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:51,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:51,985 INFO L87 Difference]: Start difference. First operand 6022 states and 9671 transitions. Second operand 7 states. [2019-10-15 01:17:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:53,317 INFO L93 Difference]: Finished difference Result 11997 states and 19355 transitions. [2019-10-15 01:17:53,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:53,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2019-10-15 01:17:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:53,339 INFO L225 Difference]: With dead ends: 11997 [2019-10-15 01:17:53,339 INFO L226 Difference]: Without dead ends: 6026 [2019-10-15 01:17:53,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 672 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:17:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2019-10-15 01:17:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 6026. [2019-10-15 01:17:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6026 states. [2019-10-15 01:17:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 9676 transitions. [2019-10-15 01:17:53,623 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 9676 transitions. Word has length 339 [2019-10-15 01:17:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:53,624 INFO L462 AbstractCegarLoop]: Abstraction has 6026 states and 9676 transitions. [2019-10-15 01:17:53,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 9676 transitions. [2019-10-15 01:17:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-10-15 01:17:53,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:53,663 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:53,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:53,872 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:53,872 INFO L82 PathProgramCache]: Analyzing trace with hash -544968551, now seen corresponding path program 1 times [2019-10-15 01:17:53,873 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:53,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399336513] [2019-10-15 01:17:53,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:53,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:53,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:17:54,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399336513] [2019-10-15 01:17:54,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043264093] [2019-10-15 01:17:54,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:55,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 3897 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:55,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-15 01:17:55,341 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:55,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:56,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:56,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 01:17:56,318 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:56,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:17:56,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847950902] [2019-10-15 01:17:56,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:56,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:17:56,321 INFO L87 Difference]: Start difference. First operand 6026 states and 9676 transitions. Second operand 16 states. [2019-10-15 01:17:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:58,722 INFO L93 Difference]: Finished difference Result 12003 states and 19294 transitions. [2019-10-15 01:17:58,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:58,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 340 [2019-10-15 01:17:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:58,744 INFO L225 Difference]: With dead ends: 12003 [2019-10-15 01:17:58,744 INFO L226 Difference]: Without dead ends: 6038 [2019-10-15 01:17:58,763 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 669 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:17:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2019-10-15 01:17:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 6036. [2019-10-15 01:17:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6036 states. [2019-10-15 01:17:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 9687 transitions. [2019-10-15 01:17:59,007 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 9687 transitions. Word has length 340 [2019-10-15 01:17:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:59,008 INFO L462 AbstractCegarLoop]: Abstraction has 6036 states and 9687 transitions. [2019-10-15 01:17:59,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:17:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 9687 transitions. [2019-10-15 01:17:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-15 01:17:59,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:59,031 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:59,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:59,240 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:59,241 INFO L82 PathProgramCache]: Analyzing trace with hash -738434345, now seen corresponding path program 2 times [2019-10-15 01:17:59,242 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:59,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670219106] [2019-10-15 01:17:59,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:59,243 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:59,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 01:17:59,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670219106] [2019-10-15 01:17:59,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545834011] [2019-10-15 01:17:59,720 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:00,425 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:00,426 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:00,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:00,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-15 01:18:00,930 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:01,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:01,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-15 01:18:01,853 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:01,853 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:01,853 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661389749] [2019-10-15 01:18:01,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:01,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:01,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:01,855 INFO L87 Difference]: Start difference. First operand 6036 states and 9687 transitions. Second operand 12 states. [2019-10-15 01:18:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:03,220 INFO L93 Difference]: Finished difference Result 11994 states and 19282 transitions. [2019-10-15 01:18:03,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:03,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 341 [2019-10-15 01:18:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:03,241 INFO L225 Difference]: With dead ends: 11994 [2019-10-15 01:18:03,241 INFO L226 Difference]: Without dead ends: 6038 [2019-10-15 01:18:03,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 676 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2019-10-15 01:18:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 6036. [2019-10-15 01:18:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6036 states. [2019-10-15 01:18:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 9686 transitions. [2019-10-15 01:18:03,611 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 9686 transitions. Word has length 341 [2019-10-15 01:18:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:03,612 INFO L462 AbstractCegarLoop]: Abstraction has 6036 states and 9686 transitions. [2019-10-15 01:18:03,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 9686 transitions. [2019-10-15 01:18:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2019-10-15 01:18:03,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:03,630 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:03,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:03,840 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:03,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1611617243, now seen corresponding path program 3 times [2019-10-15 01:18:03,841 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:03,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930718679] [2019-10-15 01:18:03,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:03,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:03,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-15 01:18:04,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930718679] [2019-10-15 01:18:04,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617950687] [2019-10-15 01:18:04,328 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:05,062 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:05,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:05,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:05,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-15 01:18:05,371 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:05,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:06,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:06,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-15 01:18:06,463 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:06,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:06,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198183793] [2019-10-15 01:18:06,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:06,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:06,468 INFO L87 Difference]: Start difference. First operand 6036 states and 9686 transitions. Second operand 15 states.