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_spec4_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:27,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:27,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:27,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:27,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:27,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:27,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:27,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:27,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:27,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:27,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:27,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:27,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:27,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:27,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:27,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:27,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:27,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:27,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:27,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:27,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:27,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:27,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:27,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:27,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:27,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:27,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:27,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:27,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:27,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:27,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:27,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:27,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:27,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:27,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:27,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:27,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:27,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:27,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:27,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:27,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:27,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:27,113 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:27,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:27,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:27,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:27,115 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:27,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:27,116 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:27,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:27,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:27,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:27,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:27,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:27,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:27,117 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:27,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:27,117 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:27,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:27,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:27,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:27,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:27,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:27,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:27,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:27,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:27,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:27,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:27,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:27,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:27,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:16:27,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:27,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:27,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:27,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:27,414 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:27,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2019-10-13 21:16:27,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31db93a14/d35370e169d045b1bd323f304ad77131/FLAGa4cce3e7a [2019-10-13 21:16:28,131 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:28,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2019-10-13 21:16:28,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31db93a14/d35370e169d045b1bd323f304ad77131/FLAGa4cce3e7a [2019-10-13 21:16:28,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31db93a14/d35370e169d045b1bd323f304ad77131 [2019-10-13 21:16:28,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:28,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:28,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:28,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:28,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:28,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:28" (1/1) ... [2019-10-13 21:16:28,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a759840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28, skipping insertion in model container [2019-10-13 21:16:28,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:28" (1/1) ... [2019-10-13 21:16:28,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:28,474 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:29,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:29,403 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:29,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:29,662 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:29,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29 WrapperNode [2019-10-13 21:16:29,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:29,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:29,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:29,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:29,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... [2019-10-13 21:16:29,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:29,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:29,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:29,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:29,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:16:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:16:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:16:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:16:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:32,311 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:32,311 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:32,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:32 BoogieIcfgContainer [2019-10-13 21:16:32,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:32,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:32,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:32,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:32,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:28" (1/3) ... [2019-10-13 21:16:32,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06da87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:32, skipping insertion in model container [2019-10-13 21:16:32,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:29" (2/3) ... [2019-10-13 21:16:32,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06da87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:32, skipping insertion in model container [2019-10-13 21:16:32,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:32" (3/3) ... [2019-10-13 21:16:32,321 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.c [2019-10-13 21:16:32,332 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:32,343 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:32,356 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:32,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:32,396 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:32,396 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:32,396 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:32,396 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:32,397 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:32,400 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:32,400 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2019-10-13 21:16:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:16:32,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:32,476 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:32,479 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1052555921, now seen corresponding path program 1 times [2019-10-13 21:16:32,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:32,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934027741] [2019-10-13 21:16:32,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:32,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:32,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:33,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934027741] [2019-10-13 21:16:33,248 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:33,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:33,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873192260] [2019-10-13 21:16:33,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:33,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:33,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:33,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:33,273 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 2 states. [2019-10-13 21:16:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:33,345 INFO L93 Difference]: Finished difference Result 792 states and 1074 transitions. [2019-10-13 21:16:33,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:33,347 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-13 21:16:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:33,381 INFO L225 Difference]: With dead ends: 792 [2019-10-13 21:16:33,386 INFO L226 Difference]: Without dead ends: 524 [2019-10-13 21:16:33,397 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-13 21:16:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2019-10-13 21:16:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2019-10-13 21:16:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 716 transitions. [2019-10-13 21:16:33,534 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 716 transitions. Word has length 157 [2019-10-13 21:16:33,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:33,536 INFO L462 AbstractCegarLoop]: Abstraction has 524 states and 716 transitions. [2019-10-13 21:16:33,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 716 transitions. [2019-10-13 21:16:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:16:33,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:33,542 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:33,542 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:33,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:33,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1340998615, now seen corresponding path program 1 times [2019-10-13 21:16:33,543 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:33,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143590192] [2019-10-13 21:16:33,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:33,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143590192] [2019-10-13 21:16:33,746 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:33,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:33,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676636915] [2019-10-13 21:16:33,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:33,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:33,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:33,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:33,749 INFO L87 Difference]: Start difference. First operand 524 states and 716 transitions. Second operand 3 states. [2019-10-13 21:16:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:33,821 INFO L93 Difference]: Finished difference Result 775 states and 1040 transitions. [2019-10-13 21:16:33,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:33,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:16:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:33,830 INFO L225 Difference]: With dead ends: 775 [2019-10-13 21:16:33,831 INFO L226 Difference]: Without dead ends: 527 [2019-10-13 21:16:33,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-13 21:16:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 526. [2019-10-13 21:16:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-13 21:16:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 718 transitions. [2019-10-13 21:16:33,862 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 718 transitions. Word has length 158 [2019-10-13 21:16:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:33,863 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 718 transitions. [2019-10-13 21:16:33,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 718 transitions. [2019-10-13 21:16:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:16:33,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:33,867 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:33,867 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:33,867 INFO L82 PathProgramCache]: Analyzing trace with hash 919719641, now seen corresponding path program 1 times [2019-10-13 21:16:33,868 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:33,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820919132] [2019-10-13 21:16:33,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:34,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820919132] [2019-10-13 21:16:34,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:34,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:34,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203766143] [2019-10-13 21:16:34,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:34,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:34,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:34,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:34,104 INFO L87 Difference]: Start difference. First operand 526 states and 718 transitions. Second operand 3 states. [2019-10-13 21:16:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:34,146 INFO L93 Difference]: Finished difference Result 1030 states and 1437 transitions. [2019-10-13 21:16:34,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:34,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:16:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:34,154 INFO L225 Difference]: With dead ends: 1030 [2019-10-13 21:16:34,154 INFO L226 Difference]: Without dead ends: 569 [2019-10-13 21:16:34,156 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-13 21:16:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 568. [2019-10-13 21:16:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 21:16:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 790 transitions. [2019-10-13 21:16:34,196 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 790 transitions. Word has length 168 [2019-10-13 21:16:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:34,198 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 790 transitions. [2019-10-13 21:16:34,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 790 transitions. [2019-10-13 21:16:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 21:16:34,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:34,206 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:34,207 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:34,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1728319775, now seen corresponding path program 1 times [2019-10-13 21:16:34,207 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:34,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946500920] [2019-10-13 21:16:34,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:34,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946500920] [2019-10-13 21:16:34,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:34,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:34,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031275905] [2019-10-13 21:16:34,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:34,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:34,414 INFO L87 Difference]: Start difference. First operand 568 states and 790 transitions. Second operand 3 states. [2019-10-13 21:16:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:34,470 INFO L93 Difference]: Finished difference Result 1153 states and 1648 transitions. [2019-10-13 21:16:34,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:34,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-13 21:16:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:34,480 INFO L225 Difference]: With dead ends: 1153 [2019-10-13 21:16:34,480 INFO L226 Difference]: Without dead ends: 650 [2019-10-13 21:16:34,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-13 21:16:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 649. [2019-10-13 21:16:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-10-13 21:16:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 928 transitions. [2019-10-13 21:16:34,527 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 928 transitions. Word has length 169 [2019-10-13 21:16:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:34,528 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 928 transitions. [2019-10-13 21:16:34,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 928 transitions. [2019-10-13 21:16:34,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:16:34,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:34,535 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:34,535 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:34,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1843291641, now seen corresponding path program 1 times [2019-10-13 21:16:34,536 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:34,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13003564] [2019-10-13 21:16:34,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:34,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13003564] [2019-10-13 21:16:34,882 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:34,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:34,883 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923253989] [2019-10-13 21:16:34,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:34,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:34,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:34,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:34,888 INFO L87 Difference]: Start difference. First operand 649 states and 928 transitions. Second operand 3 states. [2019-10-13 21:16:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:34,953 INFO L93 Difference]: Finished difference Result 1390 states and 2052 transitions. [2019-10-13 21:16:34,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:34,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-13 21:16:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:34,962 INFO L225 Difference]: With dead ends: 1390 [2019-10-13 21:16:34,963 INFO L226 Difference]: Without dead ends: 806 [2019-10-13 21:16:34,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2019-10-13 21:16:34,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 805. [2019-10-13 21:16:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-13 21:16:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1192 transitions. [2019-10-13 21:16:35,001 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1192 transitions. Word has length 170 [2019-10-13 21:16:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:35,002 INFO L462 AbstractCegarLoop]: Abstraction has 805 states and 1192 transitions. [2019-10-13 21:16:35,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1192 transitions. [2019-10-13 21:16:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:16:35,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:35,009 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:35,010 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash 446108159, now seen corresponding path program 1 times [2019-10-13 21:16:35,011 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:35,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200755660] [2019-10-13 21:16:35,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:35,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200755660] [2019-10-13 21:16:35,182 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:35,182 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:35,182 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472457833] [2019-10-13 21:16:35,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:35,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:35,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:35,184 INFO L87 Difference]: Start difference. First operand 805 states and 1192 transitions. Second operand 3 states. [2019-10-13 21:16:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:35,232 INFO L93 Difference]: Finished difference Result 1846 states and 2824 transitions. [2019-10-13 21:16:35,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:35,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:16:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:35,240 INFO L225 Difference]: With dead ends: 1846 [2019-10-13 21:16:35,240 INFO L226 Difference]: Without dead ends: 1106 [2019-10-13 21:16:35,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2019-10-13 21:16:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1105. [2019-10-13 21:16:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2019-10-13 21:16:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1696 transitions. [2019-10-13 21:16:35,297 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1696 transitions. Word has length 171 [2019-10-13 21:16:35,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:35,297 INFO L462 AbstractCegarLoop]: Abstraction has 1105 states and 1696 transitions. [2019-10-13 21:16:35,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1696 transitions. [2019-10-13 21:16:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:16:35,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:35,304 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:35,305 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2000282625, now seen corresponding path program 1 times [2019-10-13 21:16:35,306 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:35,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996745711] [2019-10-13 21:16:35,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:35,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996745711] [2019-10-13 21:16:35,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:35,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:35,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447639000] [2019-10-13 21:16:35,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:35,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:35,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:35,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:35,659 INFO L87 Difference]: Start difference. First operand 1105 states and 1696 transitions. Second operand 7 states. [2019-10-13 21:16:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:39,237 INFO L93 Difference]: Finished difference Result 1593 states and 2336 transitions. [2019-10-13 21:16:39,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:39,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-10-13 21:16:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:39,247 INFO L225 Difference]: With dead ends: 1593 [2019-10-13 21:16:39,248 INFO L226 Difference]: Without dead ends: 1356 [2019-10-13 21:16:39,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2019-10-13 21:16:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1347. [2019-10-13 21:16:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2019-10-13 21:16:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2013 transitions. [2019-10-13 21:16:39,317 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2013 transitions. Word has length 174 [2019-10-13 21:16:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:39,318 INFO L462 AbstractCegarLoop]: Abstraction has 1347 states and 2013 transitions. [2019-10-13 21:16:39,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2013 transitions. [2019-10-13 21:16:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:16:39,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:39,324 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:39,325 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1175251605, now seen corresponding path program 1 times [2019-10-13 21:16:39,325 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:39,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325479202] [2019-10-13 21:16:39,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:39,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:39,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:39,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325479202] [2019-10-13 21:16:39,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:39,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:16:39,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443942095] [2019-10-13 21:16:39,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:16:39,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:39,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:16:39,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:39,654 INFO L87 Difference]: Start difference. First operand 1347 states and 2013 transitions. Second operand 18 states. [2019-10-13 21:16:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:40,214 INFO L93 Difference]: Finished difference Result 1920 states and 2781 transitions. [2019-10-13 21:16:40,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:16:40,215 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 175 [2019-10-13 21:16:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:40,225 INFO L225 Difference]: With dead ends: 1920 [2019-10-13 21:16:40,225 INFO L226 Difference]: Without dead ends: 1435 [2019-10-13 21:16:40,228 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2019-10-13 21:16:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1433. [2019-10-13 21:16:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2019-10-13 21:16:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2132 transitions. [2019-10-13 21:16:40,343 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2132 transitions. Word has length 175 [2019-10-13 21:16:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:40,347 INFO L462 AbstractCegarLoop]: Abstraction has 1433 states and 2132 transitions. [2019-10-13 21:16:40,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:16:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2132 transitions. [2019-10-13 21:16:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:16:40,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:40,354 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:40,354 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:40,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:40,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2007814747, now seen corresponding path program 1 times [2019-10-13 21:16:40,355 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:40,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724702821] [2019-10-13 21:16:40,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:40,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724702821] [2019-10-13 21:16:40,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:40,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:40,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72736361] [2019-10-13 21:16:40,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:40,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:40,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:40,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:40,544 INFO L87 Difference]: Start difference. First operand 1433 states and 2132 transitions. Second operand 8 states. [2019-10-13 21:16:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:41,493 INFO L93 Difference]: Finished difference Result 2436 states and 3467 transitions. [2019-10-13 21:16:41,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:41,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-10-13 21:16:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:41,508 INFO L225 Difference]: With dead ends: 2436 [2019-10-13 21:16:41,508 INFO L226 Difference]: Without dead ends: 2043 [2019-10-13 21:16:41,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2019-10-13 21:16:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2024. [2019-10-13 21:16:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2019-10-13 21:16:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2922 transitions. [2019-10-13 21:16:41,630 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2922 transitions. Word has length 184 [2019-10-13 21:16:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:41,631 INFO L462 AbstractCegarLoop]: Abstraction has 2024 states and 2922 transitions. [2019-10-13 21:16:41,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2922 transitions. [2019-10-13 21:16:41,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:16:41,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,640 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:41,640 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash -202279434, now seen corresponding path program 1 times [2019-10-13 21:16:41,641 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550824564] [2019-10-13 21:16:41,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:42,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550824564] [2019-10-13 21:16:42,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:42,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-13 21:16:42,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047883985] [2019-10-13 21:16:42,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:16:42,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:16:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:16:42,018 INFO L87 Difference]: Start difference. First operand 2024 states and 2922 transitions. Second operand 17 states. [2019-10-13 21:16:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,870 INFO L93 Difference]: Finished difference Result 2579 states and 3658 transitions. [2019-10-13 21:16:42,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:16:42,870 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 185 [2019-10-13 21:16:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,886 INFO L225 Difference]: With dead ends: 2579 [2019-10-13 21:16:42,886 INFO L226 Difference]: Without dead ends: 2023 [2019-10-13 21:16:42,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2019-10-13 21:16:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2022. [2019-10-13 21:16:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2019-10-13 21:16:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2917 transitions. [2019-10-13 21:16:43,081 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2917 transitions. Word has length 185 [2019-10-13 21:16:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:43,083 INFO L462 AbstractCegarLoop]: Abstraction has 2022 states and 2917 transitions. [2019-10-13 21:16:43,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:16:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2917 transitions. [2019-10-13 21:16:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:16:43,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:43,102 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:43,103 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1555104262, now seen corresponding path program 2 times [2019-10-13 21:16:43,104 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:43,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212262753] [2019-10-13 21:16:43,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:43,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212262753] [2019-10-13 21:16:43,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703855430] [2019-10-13 21:16:43,354 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 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 [2019-10-13 21:16:43,909 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:43,909 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:43,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 2120 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:43,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:44,162 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:44,698 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:44,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:44,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446160048] [2019-10-13 21:16:44,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:44,700 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:44,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:44,701 INFO L87 Difference]: Start difference. First operand 2022 states and 2917 transitions. Second operand 14 states. [2019-10-13 21:16:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:47,258 INFO L93 Difference]: Finished difference Result 6038 states and 8818 transitions. [2019-10-13 21:16:47,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:47,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2019-10-13 21:16:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:47,303 INFO L225 Difference]: With dead ends: 6038 [2019-10-13 21:16:47,304 INFO L226 Difference]: Without dead ends: 6035 [2019-10-13 21:16:47,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2019-10-13 21:16:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4838. [2019-10-13 21:16:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4838 states. [2019-10-13 21:16:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 7239 transitions. [2019-10-13 21:16:47,677 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 7239 transitions. Word has length 185 [2019-10-13 21:16:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:47,678 INFO L462 AbstractCegarLoop]: Abstraction has 4838 states and 7239 transitions. [2019-10-13 21:16:47,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:47,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 7239 transitions. [2019-10-13 21:16:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:16:47,702 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:47,703 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:47,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:47,915 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash 340485956, now seen corresponding path program 1 times [2019-10-13 21:16:47,916 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:47,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20159596] [2019-10-13 21:16:47,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:47,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:47,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:48,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20159596] [2019-10-13 21:16:48,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535492577] [2019-10-13 21:16:48,307 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 [2019-10-13 21:16:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:48,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:48,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:49,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:49,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:49,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:49,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:16:49,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:49,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-13 21:16:49,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49238316] [2019-10-13 21:16:49,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:49,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:49,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:49,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:16:49,830 INFO L87 Difference]: Start difference. First operand 4838 states and 7239 transitions. Second operand 9 states. [2019-10-13 21:16:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,358 INFO L93 Difference]: Finished difference Result 9650 states and 14452 transitions. [2019-10-13 21:16:51,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:51,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-13 21:16:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,391 INFO L225 Difference]: With dead ends: 9650 [2019-10-13 21:16:51,391 INFO L226 Difference]: Without dead ends: 4856 [2019-10-13 21:16:51,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-10-13 21:16:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-10-13 21:16:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-10-13 21:16:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7260 transitions. [2019-10-13 21:16:51,667 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7260 transitions. Word has length 187 [2019-10-13 21:16:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,667 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 7260 transitions. [2019-10-13 21:16:51,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7260 transitions. [2019-10-13 21:16:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:16:51,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,690 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:51,898 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:51,898 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,899 INFO L82 PathProgramCache]: Analyzing trace with hash 480017068, now seen corresponding path program 1 times [2019-10-13 21:16:51,899 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688553895] [2019-10-13 21:16:51,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:52,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688553895] [2019-10-13 21:16:52,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424839892] [2019-10-13 21:16:52,128 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 [2019-10-13 21:16:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:52,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:53,078 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:53,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:53,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:53,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:53,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-13 21:16:53,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712091554] [2019-10-13 21:16:53,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:53,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:53,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:53,489 INFO L87 Difference]: Start difference. First operand 4856 states and 7260 transitions. Second operand 7 states. [2019-10-13 21:16:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:54,604 INFO L93 Difference]: Finished difference Result 9620 states and 14417 transitions. [2019-10-13 21:16:54,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:54,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2019-10-13 21:16:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:54,634 INFO L225 Difference]: With dead ends: 9620 [2019-10-13 21:16:54,634 INFO L226 Difference]: Without dead ends: 4856 [2019-10-13 21:16:54,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:16:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-10-13 21:16:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-10-13 21:16:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-10-13 21:16:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7238 transitions. [2019-10-13 21:16:54,888 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7238 transitions. Word has length 188 [2019-10-13 21:16:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:54,889 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 7238 transitions. [2019-10-13 21:16:54,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7238 transitions. [2019-10-13 21:16:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:16:54,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:54,910 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:55,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:55,125 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash 471856773, now seen corresponding path program 1 times [2019-10-13 21:16:55,126 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:55,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552908534] [2019-10-13 21:16:55,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:55,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:55,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:55,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552908534] [2019-10-13 21:16:55,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040892421] [2019-10-13 21:16:55,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 21:16:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:56,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:56,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:56,629 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:56,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:56,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:57,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:57,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:57,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412788933] [2019-10-13 21:16:57,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:57,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:57,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:57,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:57,006 INFO L87 Difference]: Start difference. First operand 4856 states and 7238 transitions. Second operand 7 states. [2019-10-13 21:16:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:58,541 INFO L93 Difference]: Finished difference Result 8847 states and 13053 transitions. [2019-10-13 21:16:58,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:58,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-13 21:16:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:58,567 INFO L225 Difference]: With dead ends: 8847 [2019-10-13 21:16:58,567 INFO L226 Difference]: Without dead ends: 4868 [2019-10-13 21:16:58,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 367 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2019-10-13 21:16:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4856. [2019-10-13 21:16:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-10-13 21:16:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7236 transitions. [2019-10-13 21:16:58,823 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7236 transitions. Word has length 189 [2019-10-13 21:16:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:58,824 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 7236 transitions. [2019-10-13 21:16:58,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7236 transitions. [2019-10-13 21:16:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:16:58,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:58,846 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:59,054 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:59,055 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2126926583, now seen corresponding path program 1 times [2019-10-13 21:16:59,056 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:59,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174682458] [2019-10-13 21:16:59,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:59,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:59,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat