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_spec27_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:18,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:18,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:18,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:18,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:18,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:18,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:18,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:18,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:18,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:18,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:18,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:18,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:18,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:18,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:18,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:18,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:18,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:18,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:19,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:19,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:19,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:19,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:19,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:19,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:19,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:19,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:19,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:19,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:19,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:19,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:19,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:19,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:19,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:19,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:19,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:19,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:19,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:19,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:19,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:19,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:19,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:19,066 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:19,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:19,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:19,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:19,073 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:19,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:19,074 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:19,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:19,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:19,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:19,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:19,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:19,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:19,075 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:19,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:19,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:19,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:19,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:19,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:19,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:19,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:19,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:19,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:19,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:19,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:19,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:19,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:19,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:19,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:19,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:19,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:19,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:19,426 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:19,427 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:19,428 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c [2019-10-15 01:14:19,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9a847e6/837f0ae7c7034db3b5b45ec671c8fcf8/FLAG23d5c263a [2019-10-15 01:14:20,149 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:20,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c [2019-10-15 01:14:20,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9a847e6/837f0ae7c7034db3b5b45ec671c8fcf8/FLAG23d5c263a [2019-10-15 01:14:20,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9a847e6/837f0ae7c7034db3b5b45ec671c8fcf8 [2019-10-15 01:14:20,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:20,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:20,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:20,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:20,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:20,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5163d5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20, skipping insertion in model container [2019-10-15 01:14:20,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:20,463 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:21,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:21,436 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:21,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:21,668 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:21,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21 WrapperNode [2019-10-15 01:14:21,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:21,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:21,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:21,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:21,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... [2019-10-15 01:14:21,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:21,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:21,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:21,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:21,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:14:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:14:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:14:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:14:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:14:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:22,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:22,009 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:22,009 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:22,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:22,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:14:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:14:22,012 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:14:22,012 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:14:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:22,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:14:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:14:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:14:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:14:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:14:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:14:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:14:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:24,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:24,362 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:24,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:24 BoogieIcfgContainer [2019-10-15 01:14:24,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:24,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:24,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:24,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:24,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:20" (1/3) ... [2019-10-15 01:14:24,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bb4524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:24, skipping insertion in model container [2019-10-15 01:14:24,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:21" (2/3) ... [2019-10-15 01:14:24,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bb4524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:24, skipping insertion in model container [2019-10-15 01:14:24,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:24" (3/3) ... [2019-10-15 01:14:24,378 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product35.cil.c [2019-10-15 01:14:24,388 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:24,401 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:24,421 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:24,463 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:24,463 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:24,463 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:24,463 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:24,463 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:24,464 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:24,464 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:24,464 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states. [2019-10-15 01:14:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-15 01:14:24,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:24,547 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:24,550 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 6494718, now seen corresponding path program 1 times [2019-10-15 01:14:24,567 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:24,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682167705] [2019-10-15 01:14:24,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:25,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682167705] [2019-10-15 01:14:25,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:25,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:25,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955325217] [2019-10-15 01:14:25,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:25,311 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:25,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:25,327 INFO L87 Difference]: Start difference. First operand 685 states. Second operand 2 states. [2019-10-15 01:14:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:25,432 INFO L93 Difference]: Finished difference Result 1045 states and 1413 transitions. [2019-10-15 01:14:25,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:25,434 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 222 [2019-10-15 01:14:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:25,466 INFO L225 Difference]: With dead ends: 1045 [2019-10-15 01:14:25,466 INFO L226 Difference]: Without dead ends: 656 [2019-10-15 01:14:25,481 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-10-15 01:14:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2019-10-15 01:14:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-15 01:14:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 889 transitions. [2019-10-15 01:14:25,642 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 889 transitions. Word has length 222 [2019-10-15 01:14:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:25,646 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 889 transitions. [2019-10-15 01:14:25,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 889 transitions. [2019-10-15 01:14:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-15 01:14:25,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:25,661 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:25,661 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash -599466214, now seen corresponding path program 1 times [2019-10-15 01:14:25,663 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:25,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366874937] [2019-10-15 01:14:25,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:26,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366874937] [2019-10-15 01:14:26,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:26,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:26,003 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124994491] [2019-10-15 01:14:26,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:26,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:26,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:26,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:26,006 INFO L87 Difference]: Start difference. First operand 656 states and 889 transitions. Second operand 3 states. [2019-10-15 01:14:26,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:26,077 INFO L93 Difference]: Finished difference Result 1028 states and 1372 transitions. [2019-10-15 01:14:26,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:26,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2019-10-15 01:14:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:26,090 INFO L225 Difference]: With dead ends: 1028 [2019-10-15 01:14:26,090 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:14:26,093 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:14:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 658. [2019-10-15 01:14:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-10-15 01:14:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 891 transitions. [2019-10-15 01:14:26,136 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 891 transitions. Word has length 223 [2019-10-15 01:14:26,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:26,137 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 891 transitions. [2019-10-15 01:14:26,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 891 transitions. [2019-10-15 01:14:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 01:14:26,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:26,143 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:26,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1876117259, now seen corresponding path program 1 times [2019-10-15 01:14:26,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:26,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104286999] [2019-10-15 01:14:26,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:26,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104286999] [2019-10-15 01:14:26,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:26,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:26,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221558253] [2019-10-15 01:14:26,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:26,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:26,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:26,566 INFO L87 Difference]: Start difference. First operand 658 states and 891 transitions. Second operand 3 states. [2019-10-15 01:14:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:26,621 INFO L93 Difference]: Finished difference Result 1296 states and 1786 transitions. [2019-10-15 01:14:26,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:26,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2019-10-15 01:14:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:26,628 INFO L225 Difference]: With dead ends: 1296 [2019-10-15 01:14:26,628 INFO L226 Difference]: Without dead ends: 703 [2019-10-15 01:14:26,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2019-10-15 01:14:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 702. [2019-10-15 01:14:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2019-10-15 01:14:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 966 transitions. [2019-10-15 01:14:26,668 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 966 transitions. Word has length 235 [2019-10-15 01:14:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:26,669 INFO L462 AbstractCegarLoop]: Abstraction has 702 states and 966 transitions. [2019-10-15 01:14:26,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 966 transitions. [2019-10-15 01:14:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:26,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:26,679 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:26,679 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:26,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash 55549419, now seen corresponding path program 1 times [2019-10-15 01:14:26,680 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:26,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550303158] [2019-10-15 01:14:26,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:26,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550303158] [2019-10-15 01:14:26,902 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:26,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:26,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375681837] [2019-10-15 01:14:26,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:26,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:26,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:26,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:26,904 INFO L87 Difference]: Start difference. First operand 702 states and 966 transitions. Second operand 3 states. [2019-10-15 01:14:26,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:26,941 INFO L93 Difference]: Finished difference Result 1425 states and 2006 transitions. [2019-10-15 01:14:26,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:26,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2019-10-15 01:14:26,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:26,948 INFO L225 Difference]: With dead ends: 1425 [2019-10-15 01:14:26,948 INFO L226 Difference]: Without dead ends: 788 [2019-10-15 01:14:26,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:26,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-15 01:14:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 787. [2019-10-15 01:14:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-10-15 01:14:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1110 transitions. [2019-10-15 01:14:26,987 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1110 transitions. Word has length 236 [2019-10-15 01:14:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:26,988 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1110 transitions. [2019-10-15 01:14:26,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1110 transitions. [2019-10-15 01:14:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-15 01:14:26,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:26,995 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:26,995 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash 339589291, now seen corresponding path program 1 times [2019-10-15 01:14:26,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:26,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172702533] [2019-10-15 01:14:26,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:27,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172702533] [2019-10-15 01:14:27,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:27,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:27,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632852951] [2019-10-15 01:14:27,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:27,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:27,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:27,262 INFO L87 Difference]: Start difference. First operand 787 states and 1110 transitions. Second operand 3 states. [2019-10-15 01:14:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:27,312 INFO L93 Difference]: Finished difference Result 1674 states and 2428 transitions. [2019-10-15 01:14:27,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:27,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-10-15 01:14:27,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:27,318 INFO L225 Difference]: With dead ends: 1674 [2019-10-15 01:14:27,318 INFO L226 Difference]: Without dead ends: 952 [2019-10-15 01:14:27,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2019-10-15 01:14:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 951. [2019-10-15 01:14:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2019-10-15 01:14:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1386 transitions. [2019-10-15 01:14:27,359 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1386 transitions. Word has length 237 [2019-10-15 01:14:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:27,360 INFO L462 AbstractCegarLoop]: Abstraction has 951 states and 1386 transitions. [2019-10-15 01:14:27,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1386 transitions. [2019-10-15 01:14:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-15 01:14:27,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:27,367 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:27,367 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:27,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2008576442, now seen corresponding path program 1 times [2019-10-15 01:14:27,368 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:27,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130120653] [2019-10-15 01:14:27,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:27,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130120653] [2019-10-15 01:14:27,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803461914] [2019-10-15 01:14:27,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:28,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:28,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:29,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:29,571 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:29,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:29,769 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:29,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:29,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:14:29,930 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427188897] [2019-10-15 01:14:29,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:29,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:29,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:29,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:29,936 INFO L87 Difference]: Start difference. First operand 951 states and 1386 transitions. Second operand 9 states. [2019-10-15 01:14:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:31,835 INFO L93 Difference]: Finished difference Result 1880 states and 2752 transitions. [2019-10-15 01:14:31,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:31,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-10-15 01:14:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:31,847 INFO L225 Difference]: With dead ends: 1880 [2019-10-15 01:14:31,847 INFO L226 Difference]: Without dead ends: 965 [2019-10-15 01:14:31,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 467 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:14:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2019-10-15 01:14:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2019-10-15 01:14:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-10-15 01:14:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1404 transitions. [2019-10-15 01:14:31,912 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1404 transitions. Word has length 239 [2019-10-15 01:14:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:31,913 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1404 transitions. [2019-10-15 01:14:31,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1404 transitions. [2019-10-15 01:14:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-15 01:14:31,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:31,919 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:32,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:32,129 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 525978830, now seen corresponding path program 1 times [2019-10-15 01:14:32,130 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867301454] [2019-10-15 01:14:32,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:32,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867301454] [2019-10-15 01:14:32,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328705368] [2019-10-15 01:14:32,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:33,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 3287 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:33,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:33,746 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:34,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:34,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:34,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:34,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:14:34,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126464328] [2019-10-15 01:14:34,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:34,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:34,214 INFO L87 Difference]: Start difference. First operand 965 states and 1404 transitions. Second operand 7 states. [2019-10-15 01:14:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:35,628 INFO L93 Difference]: Finished difference Result 1881 states and 2758 transitions. [2019-10-15 01:14:35,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:35,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2019-10-15 01:14:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:35,634 INFO L225 Difference]: With dead ends: 1881 [2019-10-15 01:14:35,635 INFO L226 Difference]: Without dead ends: 967 [2019-10-15 01:14:35,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 474 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:14:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2019-10-15 01:14:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2019-10-15 01:14:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-15 01:14:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1407 transitions. [2019-10-15 01:14:35,676 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1407 transitions. Word has length 240 [2019-10-15 01:14:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:35,676 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1407 transitions. [2019-10-15 01:14:35,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1407 transitions. [2019-10-15 01:14:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-15 01:14:35,683 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:35,683 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:35,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:35,892 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:35,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:35,892 INFO L82 PathProgramCache]: Analyzing trace with hash 274750856, now seen corresponding path program 1 times [2019-10-15 01:14:35,893 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:35,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51970239] [2019-10-15 01:14:35,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:35,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:35,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:36,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51970239] [2019-10-15 01:14:36,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293852759] [2019-10-15 01:14:36,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:37,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:37,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:37,503 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:37,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:38,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:38,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:38,251 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:38,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:14:38,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196783074] [2019-10-15 01:14:38,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:38,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:38,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:38,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:38,254 INFO L87 Difference]: Start difference. First operand 967 states and 1407 transitions. Second operand 16 states. [2019-10-15 01:14:40,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:40,713 INFO L93 Difference]: Finished difference Result 1885 states and 2756 transitions. [2019-10-15 01:14:40,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:40,718 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2019-10-15 01:14:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:40,726 INFO L225 Difference]: With dead ends: 1885 [2019-10-15 01:14:40,726 INFO L226 Difference]: Without dead ends: 979 [2019-10-15 01:14:40,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-10-15 01:14:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2019-10-15 01:14:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-10-15 01:14:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1418 transitions. [2019-10-15 01:14:40,779 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1418 transitions. Word has length 241 [2019-10-15 01:14:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:40,779 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 1418 transitions. [2019-10-15 01:14:40,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1418 transitions. [2019-10-15 01:14:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-15 01:14:40,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:40,784 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:40,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:40,994 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:40,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:40,994 INFO L82 PathProgramCache]: Analyzing trace with hash -632261288, now seen corresponding path program 2 times [2019-10-15 01:14:40,995 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:40,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600415995] [2019-10-15 01:14:40,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:40,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:40,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:41,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600415995] [2019-10-15 01:14:41,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614987679] [2019-10-15 01:14:41,453 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:42,079 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:42,079 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:42,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:42,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:42,328 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:42,866 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:42,867 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:14:42,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407325813] [2019-10-15 01:14:42,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:42,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:42,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:14:42,869 INFO L87 Difference]: Start difference. First operand 977 states and 1418 transitions. Second operand 14 states. [2019-10-15 01:14:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:45,773 INFO L93 Difference]: Finished difference Result 3219 states and 4712 transitions. [2019-10-15 01:14:45,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:45,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 242 [2019-10-15 01:14:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:45,791 INFO L225 Difference]: With dead ends: 3219 [2019-10-15 01:14:45,792 INFO L226 Difference]: Without dead ends: 2863 [2019-10-15 01:14:45,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:45,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2019-10-15 01:14:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2459. [2019-10-15 01:14:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-10-15 01:14:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3699 transitions. [2019-10-15 01:14:45,911 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3699 transitions. Word has length 242 [2019-10-15 01:14:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:45,912 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 3699 transitions. [2019-10-15 01:14:45,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3699 transitions. [2019-10-15 01:14:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-15 01:14:45,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:45,925 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:46,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:46,133 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:46,133 INFO L82 PathProgramCache]: Analyzing trace with hash -484956370, now seen corresponding path program 1 times [2019-10-15 01:14:46,134 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:46,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859509135] [2019-10-15 01:14:46,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:46,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:46,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:46,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859509135] [2019-10-15 01:14:46,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214578213] [2019-10-15 01:14:46,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:47,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:47,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:47,303 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:47,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:47,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:47,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:47,981 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:47,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:14:47,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679539372] [2019-10-15 01:14:47,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:47,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:47,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:47,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:47,985 INFO L87 Difference]: Start difference. First operand 2459 states and 3699 transitions. Second operand 15 states. [2019-10-15 01:14:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:51,075 INFO L93 Difference]: Finished difference Result 4812 states and 7274 transitions. [2019-10-15 01:14:51,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:51,076 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 243 [2019-10-15 01:14:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:51,092 INFO L225 Difference]: With dead ends: 4812 [2019-10-15 01:14:51,092 INFO L226 Difference]: Without dead ends: 2465 [2019-10-15 01:14:51,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 475 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2019-10-15 01:14:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2459. [2019-10-15 01:14:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-10-15 01:14:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3697 transitions. [2019-10-15 01:14:51,221 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3697 transitions. Word has length 243 [2019-10-15 01:14:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:51,222 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 3697 transitions. [2019-10-15 01:14:51,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3697 transitions. [2019-10-15 01:14:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-15 01:14:51,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:51,238 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:51,446 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:51,446 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:51,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1269171289, now seen corresponding path program 1 times [2019-10-15 01:14:51,447 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:51,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453765335] [2019-10-15 01:14:51,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:51,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:51,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:51,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453765335] [2019-10-15 01:14:51,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488604548] [2019-10-15 01:14:51,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:52,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:52,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:52,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:52,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:52,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:53,055 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:53,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:14:53,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390525945] [2019-10-15 01:14:53,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:53,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:53,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:53,058 INFO L87 Difference]: Start difference. First operand 2459 states and 3697 transitions. Second operand 12 states. [2019-10-15 01:14:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:54,760 INFO L93 Difference]: Finished difference Result 3723 states and 5502 transitions. [2019-10-15 01:14:54,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:54,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 244 [2019-10-15 01:14:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:54,773 INFO L225 Difference]: With dead ends: 3723 [2019-10-15 01:14:54,774 INFO L226 Difference]: Without dead ends: 1927 [2019-10-15 01:14:54,780 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2019-10-15 01:14:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1927. [2019-10-15 01:14:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2019-10-15 01:14:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2824 transitions. [2019-10-15 01:14:54,857 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2824 transitions. Word has length 244 [2019-10-15 01:14:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:54,858 INFO L462 AbstractCegarLoop]: Abstraction has 1927 states and 2824 transitions. [2019-10-15 01:14:54,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2824 transitions. [2019-10-15 01:14:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:14:54,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:54,870 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]