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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:16,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:16,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:16,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:16,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:16,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:16,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:16,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:16,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:16,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:16,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:16,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:16,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:16,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:16,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:16,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:16,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:16,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:16,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:16,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:16,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:16,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:16,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:16,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:16,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:16,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:16,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:16,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:16,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:16,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:16,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:16,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:16,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:16,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:16,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:16,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:16,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:16,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:16,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:16,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:16,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:16,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:29:16,195 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:16,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:16,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:16,196 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:16,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:16,197 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:16,197 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:16,198 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:16,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:16,198 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:16,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:16,199 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:16,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:16,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:16,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:16,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:16,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:16,200 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:16,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:16,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:16,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:16,201 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:16,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:16,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:16,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:16,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:16,202 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:16,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:16,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:16,202 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:16,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:16,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:16,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:16,253 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:16,254 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:16,254 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2019-09-20 13:29:16,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d22cfc4/6c5b3386da8c49ae976c437bdb4ff978/FLAGd4a58982a [2019-09-20 13:29:16,929 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:16,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2019-09-20 13:29:16,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d22cfc4/6c5b3386da8c49ae976c437bdb4ff978/FLAGd4a58982a [2019-09-20 13:29:17,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d22cfc4/6c5b3386da8c49ae976c437bdb4ff978 [2019-09-20 13:29:17,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:17,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:17,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:17,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:17,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:17,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:17" (1/1) ... [2019-09-20 13:29:17,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:17, skipping insertion in model container [2019-09-20 13:29:17,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:17" (1/1) ... [2019-09-20 13:29:17,167 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:17,260 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:18,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:18,083 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:18,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:18,247 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:18,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18 WrapperNode [2019-09-20 13:29:18,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:18,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:18,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:18,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:18,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (1/1) ... [2019-09-20 13:29:18,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:18,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:18,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:18,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:18,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (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 [2019-09-20 13:29:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-09-20 13:29:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-09-20 13:29:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-09-20 13:29:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-09-20 13:29:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-09-20 13:29:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-09-20 13:29:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-09-20 13:29:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-09-20 13:29:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-09-20 13:29:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-09-20 13:29:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-09-20 13:29:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-09-20 13:29:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-09-20 13:29:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-09-20 13:29:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-09-20 13:29:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-09-20 13:29:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-09-20 13:29:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-09-20 13:29:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-09-20 13:29:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-09-20 13:29:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-09-20 13:29:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-09-20 13:29:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-09-20 13:29:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-09-20 13:29:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-09-20 13:29:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-09-20 13:29:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-09-20 13:29:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-09-20 13:29:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-09-20 13:29:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-09-20 13:29:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-09-20 13:29:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-09-20 13:29:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-09-20 13:29:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-09-20 13:29:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-09-20 13:29:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-09-20 13:29:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-09-20 13:29:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-09-20 13:29:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:29:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-09-20 13:29:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-09-20 13:29:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-09-20 13:29:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-09-20 13:29:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-09-20 13:29:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-09-20 13:29:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-09-20 13:29:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-09-20 13:29:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-09-20 13:29:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-09-20 13:29:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-09-20 13:29:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-09-20 13:29:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-09-20 13:29:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-09-20 13:29:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-09-20 13:29:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-09-20 13:29:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-09-20 13:29:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-09-20 13:29:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-09-20 13:29:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-09-20 13:29:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-09-20 13:29:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-09-20 13:29:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-09-20 13:29:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-09-20 13:29:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-09-20 13:29:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-09-20 13:29:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-09-20 13:29:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-09-20 13:29:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:29:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:29:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:29:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:29:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-09-20 13:29:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-09-20 13:29:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-09-20 13:29:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-09-20 13:29:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-09-20 13:29:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-09-20 13:29:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-09-20 13:29:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-09-20 13:29:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-09-20 13:29:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-09-20 13:29:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-09-20 13:29:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-09-20 13:29:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-09-20 13:29:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-09-20 13:29:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-09-20 13:29:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-09-20 13:29:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-09-20 13:29:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-09-20 13:29:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-09-20 13:29:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-09-20 13:29:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-09-20 13:29:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-09-20 13:29:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:29:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-09-20 13:29:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-09-20 13:29:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-09-20 13:29:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-09-20 13:29:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-09-20 13:29:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-09-20 13:29:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:29:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:29:18,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:29:18,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:29:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:29:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:29:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-09-20 13:29:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-09-20 13:29:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-09-20 13:29:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-09-20 13:29:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-09-20 13:29:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-09-20 13:29:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-09-20 13:29:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-09-20 13:29:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-09-20 13:29:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-09-20 13:29:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-09-20 13:29:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-09-20 13:29:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-09-20 13:29:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-09-20 13:29:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-09-20 13:29:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-09-20 13:29:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-09-20 13:29:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-09-20 13:29:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-09-20 13:29:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-09-20 13:29:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-09-20 13:29:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-09-20 13:29:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-09-20 13:29:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-09-20 13:29:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-09-20 13:29:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-09-20 13:29:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-09-20 13:29:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:29:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-09-20 13:29:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-09-20 13:29:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-09-20 13:29:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-09-20 13:29:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-09-20 13:29:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-09-20 13:29:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-09-20 13:29:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-09-20 13:29:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-09-20 13:29:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-09-20 13:29:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:29:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-09-20 13:29:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-09-20 13:29:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:29:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:29:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:29:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:29:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:20,539 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:20,540 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:29:20,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:20 BoogieIcfgContainer [2019-09-20 13:29:20,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:20,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:20,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:20,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:20,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:17" (1/3) ... [2019-09-20 13:29:20,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bf3f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:20, skipping insertion in model container [2019-09-20 13:29:20,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:18" (2/3) ... [2019-09-20 13:29:20,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bf3f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:20, skipping insertion in model container [2019-09-20 13:29:20,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:20" (3/3) ... [2019-09-20 13:29:20,550 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product17.cil.c [2019-09-20 13:29:20,560 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:20,575 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:20,593 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:20,621 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:20,621 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:20,622 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:20,622 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:20,622 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:20,622 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:20,622 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:20,622 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-09-20 13:29:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-20 13:29:20,687 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:20,688 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:20,691 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash 513895372, now seen corresponding path program 1 times [2019-09-20 13:29:20,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:20,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:20,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:20,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:20,760 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-20 13:29:21,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:21,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:21,350 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:21,356 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:21,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:21,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:21,373 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 2 states. [2019-09-20 13:29:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:21,426 INFO L93 Difference]: Finished difference Result 498 states and 683 transitions. [2019-09-20 13:29:21,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:21,427 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-09-20 13:29:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:21,449 INFO L225 Difference]: With dead ends: 498 [2019-09-20 13:29:21,449 INFO L226 Difference]: Without dead ends: 489 [2019-09-20 13:29:21,451 INFO L636 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 [2019-09-20 13:29:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-09-20 13:29:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-09-20 13:29:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-09-20 13:29:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 672 transitions. [2019-09-20 13:29:21,554 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 672 transitions. Word has length 157 [2019-09-20 13:29:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:21,558 INFO L475 AbstractCegarLoop]: Abstraction has 489 states and 672 transitions. [2019-09-20 13:29:21,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 672 transitions. [2019-09-20 13:29:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-20 13:29:21,572 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:21,572 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:21,573 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:21,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1286604263, now seen corresponding path program 1 times [2019-09-20 13:29:21,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:21,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:21,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:21,580 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-20 13:29:21,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:21,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:21,900 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:21,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:21,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:21,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:21,902 INFO L87 Difference]: Start difference. First operand 489 states and 672 transitions. Second operand 3 states. [2019-09-20 13:29:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:21,942 INFO L93 Difference]: Finished difference Result 492 states and 675 transitions. [2019-09-20 13:29:21,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:21,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-09-20 13:29:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:21,951 INFO L225 Difference]: With dead ends: 492 [2019-09-20 13:29:21,951 INFO L226 Difference]: Without dead ends: 492 [2019-09-20 13:29:21,953 INFO L636 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 [2019-09-20 13:29:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-09-20 13:29:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-09-20 13:29:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-09-20 13:29:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 674 transitions. [2019-09-20 13:29:22,011 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 674 transitions. Word has length 158 [2019-09-20 13:29:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:22,012 INFO L475 AbstractCegarLoop]: Abstraction has 491 states and 674 transitions. [2019-09-20 13:29:22,012 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 674 transitions. [2019-09-20 13:29:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-20 13:29:22,017 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:22,017 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:22,017 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:22,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1045004717, now seen corresponding path program 1 times [2019-09-20 13:29:22,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:22,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:22,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:22,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:22,022 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-20 13:29:22,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:22,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:22,213 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:22,215 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:22,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:22,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:22,217 INFO L87 Difference]: Start difference. First operand 491 states and 674 transitions. Second operand 3 states. [2019-09-20 13:29:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:22,252 INFO L93 Difference]: Finished difference Result 532 states and 744 transitions. [2019-09-20 13:29:22,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:22,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-09-20 13:29:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:22,257 INFO L225 Difference]: With dead ends: 532 [2019-09-20 13:29:22,257 INFO L226 Difference]: Without dead ends: 532 [2019-09-20 13:29:22,257 INFO L636 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 [2019-09-20 13:29:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-09-20 13:29:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2019-09-20 13:29:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-09-20 13:29:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 743 transitions. [2019-09-20 13:29:22,288 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 743 transitions. Word has length 164 [2019-09-20 13:29:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:22,290 INFO L475 AbstractCegarLoop]: Abstraction has 531 states and 743 transitions. [2019-09-20 13:29:22,290 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 743 transitions. [2019-09-20 13:29:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-09-20 13:29:22,296 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:22,297 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:22,297 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash -703696458, now seen corresponding path program 1 times [2019-09-20 13:29:22,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:22,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:22,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:22,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:22,301 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-20 13:29:22,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:22,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:29:22,716 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:22,717 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:29:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:29:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:22,718 INFO L87 Difference]: Start difference. First operand 531 states and 743 transitions. Second operand 7 states. [2019-09-20 13:29:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:25,930 INFO L93 Difference]: Finished difference Result 760 states and 1041 transitions. [2019-09-20 13:29:25,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:29:25,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-09-20 13:29:25,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:25,937 INFO L225 Difference]: With dead ends: 760 [2019-09-20 13:29:25,937 INFO L226 Difference]: Without dead ends: 758 [2019-09-20 13:29:25,937 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:29:25,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-09-20 13:29:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 749. [2019-09-20 13:29:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-09-20 13:29:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1030 transitions. [2019-09-20 13:29:25,966 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1030 transitions. Word has length 165 [2019-09-20 13:29:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:25,967 INFO L475 AbstractCegarLoop]: Abstraction has 749 states and 1030 transitions. [2019-09-20 13:29:25,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:29:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1030 transitions. [2019-09-20 13:29:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-20 13:29:25,971 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:25,971 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:25,971 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2037721411, now seen corresponding path program 1 times [2019-09-20 13:29:25,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:25,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:25,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:25,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:25,976 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-20 13:29:26,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:26,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-09-20 13:29:26,316 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:26,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-20 13:29:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-20 13:29:26,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-09-20 13:29:26,317 INFO L87 Difference]: Start difference. First operand 749 states and 1030 transitions. Second operand 18 states. [2019-09-20 13:29:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:26,741 INFO L93 Difference]: Finished difference Result 845 states and 1161 transitions. [2019-09-20 13:29:26,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-20 13:29:26,741 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2019-09-20 13:29:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:26,746 INFO L225 Difference]: With dead ends: 845 [2019-09-20 13:29:26,746 INFO L226 Difference]: Without dead ends: 837 [2019-09-20 13:29:26,747 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-09-20 13:29:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2019-09-20 13:29:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 835. [2019-09-20 13:29:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2019-09-20 13:29:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1149 transitions. [2019-09-20 13:29:26,775 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1149 transitions. Word has length 166 [2019-09-20 13:29:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:26,776 INFO L475 AbstractCegarLoop]: Abstraction has 835 states and 1149 transitions. [2019-09-20 13:29:26,776 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-20 13:29:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1149 transitions. [2019-09-20 13:29:26,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-09-20 13:29:26,779 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:26,779 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:26,780 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:26,780 INFO L82 PathProgramCache]: Analyzing trace with hash 729638053, now seen corresponding path program 1 times [2019-09-20 13:29:26,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:26,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:26,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:26,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:26,785 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-20 13:29:26,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:26,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:29:26,943 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:26,943 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:29:26,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:29:26,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:26,944 INFO L87 Difference]: Start difference. First operand 835 states and 1149 transitions. Second operand 8 states. [2019-09-20 13:29:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:27,839 INFO L93 Difference]: Finished difference Result 1397 states and 1898 transitions. [2019-09-20 13:29:27,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-20 13:29:27,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-09-20 13:29:27,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:27,852 INFO L225 Difference]: With dead ends: 1397 [2019-09-20 13:29:27,852 INFO L226 Difference]: Without dead ends: 1397 [2019-09-20 13:29:27,853 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:29:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2019-09-20 13:29:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1378. [2019-09-20 13:29:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-09-20 13:29:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1879 transitions. [2019-09-20 13:29:27,909 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1879 transitions. Word has length 175 [2019-09-20 13:29:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:27,912 INFO L475 AbstractCegarLoop]: Abstraction has 1378 states and 1879 transitions. [2019-09-20 13:29:27,912 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:29:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1879 transitions. [2019-09-20 13:29:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-09-20 13:29:27,917 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:27,917 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:27,918 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:27,918 INFO L82 PathProgramCache]: Analyzing trace with hash -225623184, now seen corresponding path program 1 times [2019-09-20 13:29:27,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:27,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:27,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:27,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:27,926 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-20 13:29:28,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:28,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-09-20 13:29:28,316 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:28,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-20 13:29:28,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-20 13:29:28,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:29:28,318 INFO L87 Difference]: Start difference. First operand 1378 states and 1879 transitions. Second operand 17 states. [2019-09-20 13:29:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:29,188 INFO L93 Difference]: Finished difference Result 1377 states and 1875 transitions. [2019-09-20 13:29:29,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:29:29,189 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 176 [2019-09-20 13:29:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:29,197 INFO L225 Difference]: With dead ends: 1377 [2019-09-20 13:29:29,197 INFO L226 Difference]: Without dead ends: 1377 [2019-09-20 13:29:29,198 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:29:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2019-09-20 13:29:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1376. [2019-09-20 13:29:29,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-09-20 13:29:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1874 transitions. [2019-09-20 13:29:29,240 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1874 transitions. Word has length 176 [2019-09-20 13:29:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:29,241 INFO L475 AbstractCegarLoop]: Abstraction has 1376 states and 1874 transitions. [2019-09-20 13:29:29,241 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-20 13:29:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1874 transitions. [2019-09-20 13:29:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-09-20 13:29:29,247 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:29,248 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:29,248 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1949627460, now seen corresponding path program 2 times [2019-09-20 13:29:29,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:29,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:29,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:29,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:29,253 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-20 13:29:29,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:29,452 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:29,452 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-20 13:29:29,454 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-20 13:29:29,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:29,454 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:29:29,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:29:29,622 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-20 13:29:29,914 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-09-20 13:29:29,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:29:29,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-20 13:29:29,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:29:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-20 13:29:30,123 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:29:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:29:30,569 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:30,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-09-20 13:29:30,570 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:30,571 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:29:30,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:29:30,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-09-20 13:29:30,572 INFO L87 Difference]: Start difference. First operand 1376 states and 1874 transitions. Second operand 8 states. [2019-09-20 13:29:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:31,488 INFO L93 Difference]: Finished difference Result 2720 states and 3723 transitions. [2019-09-20 13:29:31,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-20 13:29:31,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2019-09-20 13:29:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:31,514 INFO L225 Difference]: With dead ends: 2720 [2019-09-20 13:29:31,515 INFO L226 Difference]: Without dead ends: 2720 [2019-09-20 13:29:31,516 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2019-09-20 13:29:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2019-09-20 13:29:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2705. [2019-09-20 13:29:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2705 states. [2019-09-20 13:29:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3709 transitions. [2019-09-20 13:29:31,682 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3709 transitions. Word has length 176 [2019-09-20 13:29:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:31,682 INFO L475 AbstractCegarLoop]: Abstraction has 2705 states and 3709 transitions. [2019-09-20 13:29:31,682 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:29:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3709 transitions. [2019-09-20 13:29:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-09-20 13:29:31,689 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:31,689 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:31,689 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash -213058520, now seen corresponding path program 1 times [2019-09-20 13:29:31,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:31,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:31,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:29:31,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:31,695 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-20 13:29:31,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:31,926 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:31,928 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2019-09-20 13:29:31,932 INFO L207 CegarAbsIntRunner]: [59], [62], [63], [66], [72], [73], [76], [85], [106], [109], [119], [120], [136], [139], [153], [154], [156], [266], [268], [272], [275], [276], [321], [324], [333], [336], [338], [339], [342], [352], [609], [611], [612], [613], [649], [652], [666], [695], [698], [704], [705], [706], [707], [724], [726], [730], [733], [747], [751], [754], [772], [775], [796], [805], [809], [811], [813], [816], [823], [830], [833], [969], [971], [988], [1066], [1068], [1071], [1073], [1076], [1136], [1208], [1212], [1223], [1226], [1267], [1269], [1382], [1385], [1387], [1390], [1399], [1405], [1408], [1417], [1471], [1474], [1483], [1611], [1613], [1615], [1617], [1618], [1648], [1658], [1659], [1660], [1661], [1662], [1663], [1666], [1667], [1668], [1669], [1670], [1672], [1673], [1674], [1675], [1688], [1689], [1730], [1731], [1744], [1750], [1751], [1752], [1753], [1754], [1755], [1756], [1757], [1758], [1759], [1760], [1761], [1762], [1763], [1764], [1766], [1767], [1768], [1769], [1794], [1796], [1797], [1814], [1816], [1817], [1818], [1819], [1820], [1822], [1823], [1824], [1826], [1827], [1828], [1829], [1830], [1831], [1832], [1852], [1853], [1854], [1855], [1856], [1857], [1858], [1859], [1860] [2019-09-20 13:29:31,990 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:31,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:32,195 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:32,197 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 198 root evaluator evaluations with a maximum evaluation depth of 0. Performed 198 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 368 variables. [2019-09-20 13:29:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:32,203 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:32,332 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:29:32,332 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:32,346 INFO L420 sIntCurrentIteration]: We unified 176 AI predicates to 176 [2019-09-20 13:29:32,347 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:32,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:32,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:29:32,348 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:32,349 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:32,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:32,350 INFO L87 Difference]: Start difference. First operand 2705 states and 3709 transitions. Second operand 2 states. [2019-09-20 13:29:32,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:32,351 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:29:32,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:32,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 177 [2019-09-20 13:29:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:32,352 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:29:32,352 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:32,353 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:32,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2019-09-20 13:29:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:32,354 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:32,354 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:32,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:32,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:32 BoogieIcfgContainer [2019-09-20 13:29:32,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:32,371 INFO L168 Benchmark]: Toolchain (without parser) took 15219.56 ms. Allocated memory was 138.4 MB in the beginning and 505.4 MB in the end (delta: 367.0 MB). Free memory was 83.0 MB in the beginning and 319.6 MB in the end (delta: -236.7 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:32,372 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:32,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1098.57 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 82.8 MB in the beginning and 136.4 MB in the end (delta: -53.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:32,376 INFO L168 Benchmark]: Boogie Preprocessor took 150.73 ms. Allocated memory is still 200.3 MB. Free memory was 136.4 MB in the beginning and 127.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:32,378 INFO L168 Benchmark]: RCFGBuilder took 2142.33 ms. Allocated memory was 200.3 MB in the beginning and 270.5 MB in the end (delta: 70.3 MB). Free memory was 127.7 MB in the beginning and 179.1 MB in the end (delta: -51.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:32,384 INFO L168 Benchmark]: TraceAbstraction took 11823.09 ms. Allocated memory was 270.5 MB in the beginning and 505.4 MB in the end (delta: 234.9 MB). Free memory was 179.1 MB in the beginning and 319.6 MB in the end (delta: -140.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:32,398 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1098.57 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 82.8 MB in the beginning and 136.4 MB in the end (delta: -53.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.73 ms. Allocated memory is still 200.3 MB. Free memory was 136.4 MB in the beginning and 127.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2142.33 ms. Allocated memory was 200.3 MB in the beginning and 270.5 MB in the end (delta: 70.3 MB). Free memory was 127.7 MB in the beginning and 179.1 MB in the end (delta: -51.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11823.09 ms. Allocated memory was 270.5 MB in the beginning and 505.4 MB in the end (delta: 234.9 MB). Free memory was 179.1 MB in the beginning and 319.6 MB in the end (delta: -140.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2224]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 111 procedures, 759 locations, 1 error locations. SAFE Result, 11.7s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 6.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5629 SDtfs, 2653 SDslu, 30074 SDs, 0 SdLazy, 4075 SolverSat, 497 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 540 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2705occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 2.2443181818181817 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1690 NumberOfCodeBlocks, 1590 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1855 ConstructedInterpolants, 0 QuantifiedInterpolants, 464762 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2014 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 364/370 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...