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_spec9_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:19,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:19,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:19,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:19,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:19,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:19,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:19,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:19,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:19,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:19,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:19,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:19,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:19,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:19,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:19,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:19,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:19,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:19,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:19,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:19,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:19,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:19,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:19,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:19,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:19,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:19,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:19,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:19,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:19,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:19,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:19,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:19,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:19,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:19,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:19,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:19,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:19,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:19,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:19,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:19,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:19,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:19:19,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:19,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:19,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:19,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:19,157 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:19,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:19,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:19,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:19,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:19,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:19,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:19,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:19,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:19,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:19,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:19,159 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:19,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:19,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:19,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:19,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:19,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:19,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:19,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:19,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:19,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:19,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:19,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:19,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:19,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:19:19,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:19,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:19,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:19,520 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:19,521 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:19,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product34.cil.c [2019-10-13 21:19:19,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df44de07/0ac0478783bc4cdebd7d9a4a14bb3162/FLAGbcfd1ed41 [2019-10-13 21:19:20,323 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:20,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product34.cil.c [2019-10-13 21:19:20,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df44de07/0ac0478783bc4cdebd7d9a4a14bb3162/FLAGbcfd1ed41 [2019-10-13 21:19:20,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df44de07/0ac0478783bc4cdebd7d9a4a14bb3162 [2019-10-13 21:19:20,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:20,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:20,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:20,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:20,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:20,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:20" (1/1) ... [2019-10-13 21:19:20,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f33695a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:20, skipping insertion in model container [2019-10-13 21:19:20,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:20" (1/1) ... [2019-10-13 21:19:20,458 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:20,535 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:21,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:21,368 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:21,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:21,619 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:21,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21 WrapperNode [2019-10-13 21:19:21,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:21,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:21,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:21,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:21,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (1/1) ... [2019-10-13 21:19:21,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:21,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:21,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:21,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:21,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (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 [2019-10-13 21:19:21,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:21,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:21,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:21,962 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:21,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:21,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:21,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:21,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:21,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:19:21,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:19:21,964 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:21,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:21,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:21,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:21,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:21,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:21,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:21,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:19:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:19:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:19:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:19:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:19:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:19:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:19:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:19:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:19:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:19:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:19:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:19:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:19:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:19:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:19:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:19:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:19:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:19:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:19:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:24,531 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:24,531 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:24,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:24 BoogieIcfgContainer [2019-10-13 21:19:24,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:24,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:24,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:24,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:24,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:20" (1/3) ... [2019-10-13 21:19:24,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ed068d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:24, skipping insertion in model container [2019-10-13 21:19:24,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:21" (2/3) ... [2019-10-13 21:19:24,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ed068d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:24, skipping insertion in model container [2019-10-13 21:19:24,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:24" (3/3) ... [2019-10-13 21:19:24,548 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product34.cil.c [2019-10-13 21:19:24,560 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:24,573 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:24,585 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:24,627 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:24,628 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:24,628 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:24,636 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:24,637 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:24,637 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:24,637 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:24,637 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states. [2019-10-13 21:19:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:19:24,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:24,719 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:24,723 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:24,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1909664876, now seen corresponding path program 1 times [2019-10-13 21:19:24,741 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:24,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249229759] [2019-10-13 21:19:24,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:24,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:24,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:25,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249229759] [2019-10-13 21:19:25,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:25,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:25,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998292532] [2019-10-13 21:19:25,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:25,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:25,453 INFO L87 Difference]: Start difference. First operand 655 states. Second operand 2 states. [2019-10-13 21:19:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:25,560 INFO L93 Difference]: Finished difference Result 996 states and 1339 transitions. [2019-10-13 21:19:25,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:25,563 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-13 21:19:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:25,602 INFO L225 Difference]: With dead ends: 996 [2019-10-13 21:19:25,603 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:19:25,615 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:19:25,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:19:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:19:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 848 transitions. [2019-10-13 21:19:25,762 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 848 transitions. Word has length 167 [2019-10-13 21:19:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:25,765 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 848 transitions. [2019-10-13 21:19:25,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 848 transitions. [2019-10-13 21:19:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:19:25,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:25,770 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:25,771 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1779863714, now seen corresponding path program 1 times [2019-10-13 21:19:25,772 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:25,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357857597] [2019-10-13 21:19:25,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:25,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:25,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:26,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357857597] [2019-10-13 21:19:26,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:26,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:26,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536014742] [2019-10-13 21:19:26,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:26,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:26,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:26,120 INFO L87 Difference]: Start difference. First operand 626 states and 848 transitions. Second operand 3 states. [2019-10-13 21:19:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:26,231 INFO L93 Difference]: Finished difference Result 979 states and 1304 transitions. [2019-10-13 21:19:26,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:26,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:19:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:26,247 INFO L225 Difference]: With dead ends: 979 [2019-10-13 21:19:26,248 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:19:26,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:19:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-10-13 21:19:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:19:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 850 transitions. [2019-10-13 21:19:26,309 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 850 transitions. Word has length 168 [2019-10-13 21:19:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:26,311 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 850 transitions. [2019-10-13 21:19:26,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 850 transitions. [2019-10-13 21:19:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:19:26,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:26,391 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:26,391 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,391 INFO L82 PathProgramCache]: Analyzing trace with hash -562274134, now seen corresponding path program 1 times [2019-10-13 21:19:26,392 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611998780] [2019-10-13 21:19:26,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:26,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611998780] [2019-10-13 21:19:26,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:26,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:26,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544173353] [2019-10-13 21:19:26,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:26,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:26,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:26,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:26,617 INFO L87 Difference]: Start difference. First operand 628 states and 850 transitions. Second operand 3 states. [2019-10-13 21:19:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:26,670 INFO L93 Difference]: Finished difference Result 1234 states and 1701 transitions. [2019-10-13 21:19:26,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:26,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 21:19:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:26,680 INFO L225 Difference]: With dead ends: 1234 [2019-10-13 21:19:26,681 INFO L226 Difference]: Without dead ends: 671 [2019-10-13 21:19:26,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-10-13 21:19:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 670. [2019-10-13 21:19:26,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-13 21:19:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 922 transitions. [2019-10-13 21:19:26,715 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 922 transitions. Word has length 174 [2019-10-13 21:19:26,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:26,719 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 922 transitions. [2019-10-13 21:19:26,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 922 transitions. [2019-10-13 21:19:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:19:26,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:26,734 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:26,734 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1803150498, now seen corresponding path program 1 times [2019-10-13 21:19:26,735 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826668859] [2019-10-13 21:19:26,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:26,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826668859] [2019-10-13 21:19:26,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:26,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:26,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509056157] [2019-10-13 21:19:26,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:26,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:26,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:26,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:26,963 INFO L87 Difference]: Start difference. First operand 670 states and 922 transitions. Second operand 3 states. [2019-10-13 21:19:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:27,007 INFO L93 Difference]: Finished difference Result 1148 states and 1566 transitions. [2019-10-13 21:19:27,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:27,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:19:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:27,014 INFO L225 Difference]: With dead ends: 1148 [2019-10-13 21:19:27,014 INFO L226 Difference]: Without dead ends: 811 [2019-10-13 21:19:27,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2019-10-13 21:19:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 810. [2019-10-13 21:19:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-13 21:19:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1119 transitions. [2019-10-13 21:19:27,058 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1119 transitions. Word has length 175 [2019-10-13 21:19:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:27,059 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1119 transitions. [2019-10-13 21:19:27,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1119 transitions. [2019-10-13 21:19:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-13 21:19:27,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:27,069 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:27,069 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:27,070 INFO L82 PathProgramCache]: Analyzing trace with hash -753828039, now seen corresponding path program 1 times [2019-10-13 21:19:27,070 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:27,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512345933] [2019-10-13 21:19:27,071 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:27,071 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:27,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:19:27,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512345933] [2019-10-13 21:19:27,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:27,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:19:27,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838005923] [2019-10-13 21:19:27,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:19:27,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:19:27,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:19:27,612 INFO L87 Difference]: Start difference. First operand 810 states and 1119 transitions. Second operand 6 states. [2019-10-13 21:19:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:28,528 INFO L93 Difference]: Finished difference Result 2010 states and 2769 transitions. [2019-10-13 21:19:28,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:19:28,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 320 [2019-10-13 21:19:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:28,538 INFO L225 Difference]: With dead ends: 2010 [2019-10-13 21:19:28,538 INFO L226 Difference]: Without dead ends: 1571 [2019-10-13 21:19:28,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2019-10-13 21:19:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1560. [2019-10-13 21:19:28,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2019-10-13 21:19:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2174 transitions. [2019-10-13 21:19:28,622 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2174 transitions. Word has length 320 [2019-10-13 21:19:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:28,623 INFO L462 AbstractCegarLoop]: Abstraction has 1560 states and 2174 transitions. [2019-10-13 21:19:28,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:19:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2174 transitions. [2019-10-13 21:19:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-13 21:19:28,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:28,633 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:28,633 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash -536958527, now seen corresponding path program 1 times [2019-10-13 21:19:28,634 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:28,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213565461] [2019-10-13 21:19:28,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:28,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:28,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:19:29,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213565461] [2019-10-13 21:19:29,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:29,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:19:29,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092912838] [2019-10-13 21:19:29,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:29,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:29,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:29,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:19:29,029 INFO L87 Difference]: Start difference. First operand 1560 states and 2174 transitions. Second operand 11 states. [2019-10-13 21:19:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:29,577 INFO L93 Difference]: Finished difference Result 2435 states and 3327 transitions. [2019-10-13 21:19:29,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:19:29,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 321 [2019-10-13 21:19:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:29,586 INFO L225 Difference]: With dead ends: 2435 [2019-10-13 21:19:29,587 INFO L226 Difference]: Without dead ends: 1534 [2019-10-13 21:19:29,590 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:19:29,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2019-10-13 21:19:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1530. [2019-10-13 21:19:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-10-13 21:19:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2123 transitions. [2019-10-13 21:19:29,655 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2123 transitions. Word has length 321 [2019-10-13 21:19:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:29,655 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2123 transitions. [2019-10-13 21:19:29,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:19:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2123 transitions. [2019-10-13 21:19:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-13 21:19:29,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:29,667 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:29,667 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:29,667 INFO L82 PathProgramCache]: Analyzing trace with hash -237439355, now seen corresponding path program 1 times [2019-10-13 21:19:29,668 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:29,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839941051] [2019-10-13 21:19:29,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:30,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839941051] [2019-10-13 21:19:30,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752239381] [2019-10-13 21:19:30,429 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 [2019-10-13 21:19:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:31,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:31,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:31,695 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:32,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:32,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:32,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:32,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:32,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052242679] [2019-10-13 21:19:32,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:32,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:32,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:32,878 INFO L87 Difference]: Start difference. First operand 1530 states and 2123 transitions. Second operand 9 states. [2019-10-13 21:19:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:35,784 INFO L93 Difference]: Finished difference Result 3038 states and 4226 transitions. [2019-10-13 21:19:35,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:35,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-13 21:19:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:35,794 INFO L225 Difference]: With dead ends: 3038 [2019-10-13 21:19:35,794 INFO L226 Difference]: Without dead ends: 1544 [2019-10-13 21:19:35,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2019-10-13 21:19:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2019-10-13 21:19:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-10-13 21:19:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2141 transitions. [2019-10-13 21:19:35,891 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2141 transitions. Word has length 329 [2019-10-13 21:19:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:35,892 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2141 transitions. [2019-10-13 21:19:35,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2141 transitions. [2019-10-13 21:19:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-13 21:19:35,908 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:35,909 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:36,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:36,120 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:36,121 INFO L82 PathProgramCache]: Analyzing trace with hash -245007680, now seen corresponding path program 1 times [2019-10-13 21:19:36,121 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:36,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260477710] [2019-10-13 21:19:36,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:36,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:36,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:36,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260477710] [2019-10-13 21:19:36,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705046223] [2019-10-13 21:19:36,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:37,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:37,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:38,105 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:38,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:38,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:38,890 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:38,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:38,891 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091426320] [2019-10-13 21:19:38,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:38,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:38,893 INFO L87 Difference]: Start difference. First operand 1544 states and 2141 transitions. Second operand 7 states. [2019-10-13 21:19:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:40,392 INFO L93 Difference]: Finished difference Result 3041 states and 4235 transitions. [2019-10-13 21:19:40,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:40,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-13 21:19:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:40,403 INFO L225 Difference]: With dead ends: 3041 [2019-10-13 21:19:40,403 INFO L226 Difference]: Without dead ends: 1548 [2019-10-13 21:19:40,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-13 21:19:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2019-10-13 21:19:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-10-13 21:19:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2146 transitions. [2019-10-13 21:19:40,491 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2146 transitions. Word has length 330 [2019-10-13 21:19:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:40,492 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2146 transitions. [2019-10-13 21:19:40,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2146 transitions. [2019-10-13 21:19:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-13 21:19:40,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:40,503 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:40,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:40,713 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:40,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1118924247, now seen corresponding path program 1 times [2019-10-13 21:19:40,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:40,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794865967] [2019-10-13 21:19:40,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:40,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:40,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:41,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794865967] [2019-10-13 21:19:41,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685579123] [2019-10-13 21:19:41,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:42,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:42,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:42,449 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:43,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:43,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:43,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:43,432 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:43,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:43,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977388706] [2019-10-13 21:19:43,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:43,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:43,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:43,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:43,435 INFO L87 Difference]: Start difference. First operand 1548 states and 2146 transitions. Second operand 16 states. [2019-10-13 21:19:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:46,083 INFO L93 Difference]: Finished difference Result 3047 states and 4234 transitions. [2019-10-13 21:19:46,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:46,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-13 21:19:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:46,094 INFO L225 Difference]: With dead ends: 3047 [2019-10-13 21:19:46,094 INFO L226 Difference]: Without dead ends: 1560 [2019-10-13 21:19:46,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-10-13 21:19:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-10-13 21:19:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-13 21:19:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2157 transitions. [2019-10-13 21:19:46,169 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2157 transitions. Word has length 331 [2019-10-13 21:19:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:46,170 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2157 transitions. [2019-10-13 21:19:46,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2157 transitions. [2019-10-13 21:19:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-13 21:19:46,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:46,180 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:46,398 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:46,398 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:46,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:46,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1698160328, now seen corresponding path program 2 times [2019-10-13 21:19:46,399 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:46,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819554106] [2019-10-13 21:19:46,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:46,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:46,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-13 21:19:46,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819554106] [2019-10-13 21:19:46,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379364459] [2019-10-13 21:19:46,869 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 [2019-10-13 21:19:47,661 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:47,661 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:47,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:47,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:48,489 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:49,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:49,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:19:49,357 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:49,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:49,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748033307] [2019-10-13 21:19:49,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:49,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:49,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:49,360 INFO L87 Difference]: Start difference. First operand 1558 states and 2157 transitions. Second operand 12 states. [2019-10-13 21:19:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:51,065 INFO L93 Difference]: Finished difference Result 3038 states and 4222 transitions. [2019-10-13 21:19:51,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:51,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-13 21:19:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:51,079 INFO L225 Difference]: With dead ends: 3038 [2019-10-13 21:19:51,079 INFO L226 Difference]: Without dead ends: 1560 [2019-10-13 21:19:51,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-10-13 21:19:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-10-13 21:19:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-13 21:19:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2156 transitions. [2019-10-13 21:19:51,149 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2156 transitions. Word has length 332 [2019-10-13 21:19:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:51,149 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2156 transitions. [2019-10-13 21:19:51,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2156 transitions. [2019-10-13 21:19:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-13 21:19:51,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:51,157 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:51,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:51,377 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:51,378 INFO L82 PathProgramCache]: Analyzing trace with hash -653196719, now seen corresponding path program 3 times [2019-10-13 21:19:51,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:51,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322170031] [2019-10-13 21:19:51,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:51,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:51,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 21:19:52,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322170031] [2019-10-13 21:19:52,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779608718] [2019-10-13 21:19:52,013 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true