java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 13:04:19,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 13:04:19,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 13:04:19,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 13:04:19,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 13:04:19,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 13:04:19,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 13:04:19,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 13:04:19,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 13:04:19,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 13:04:19,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 13:04:19,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 13:04:19,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 13:04:19,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 13:04:19,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 13:04:19,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 13:04:19,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 13:04:19,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 13:04:19,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 13:04:19,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 13:04:19,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 13:04:19,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 13:04:19,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 13:04:19,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 13:04:19,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 13:04:19,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 13:04:19,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 13:04:19,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 13:04:19,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 13:04:19,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 13:04:19,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 13:04:19,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 13:04:19,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 13:04:19,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 13:04:19,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 13:04:19,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 13:04:19,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 13:04:19,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 13:04:19,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 13:04:19,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 13:04:19,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 13:04:19,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 13:04:19,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 13:04:19,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 13:04:19,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 13:04:19,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 13:04:19,139 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 13:04:19,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 13:04:19,139 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 13:04:19,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 13:04:19,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 13:04:19,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 13:04:19,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 13:04:19,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 13:04:19,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 13:04:19,140 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 13:04:19,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 13:04:19,141 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 13:04:19,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 13:04:19,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 13:04:19,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 13:04:19,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 13:04:19,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 13:04:19,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 13:04:19,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 13:04:19,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 13:04:19,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 13:04:19,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 13:04:19,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 13:04:19,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 13:04:19,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 13:04:19,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 13:04:19,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 13:04:19,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 13:04:19,190 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 13:04:19,191 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 13:04:19,191 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-10-02 13:04:19,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff5edb77/29c46b48566e4361ad204e045f358cd7/FLAG2cab7ce25 [2019-10-02 13:04:19,877 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 13:04:19,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-10-02 13:04:19,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff5edb77/29c46b48566e4361ad204e045f358cd7/FLAG2cab7ce25 [2019-10-02 13:04:20,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff5edb77/29c46b48566e4361ad204e045f358cd7 [2019-10-02 13:04:20,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 13:04:20,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 13:04:20,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 13:04:20,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 13:04:20,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 13:04:20,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 01:04:20" (1/1) ... [2019-10-02 13:04:20,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4796d6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:20, skipping insertion in model container [2019-10-02 13:04:20,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 01:04:20" (1/1) ... [2019-10-02 13:04:20,086 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 13:04:20,181 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 13:04:21,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 13:04:21,031 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 13:04:21,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 13:04:21,242 INFO L192 MainTranslator]: Completed translation [2019-10-02 13:04:21,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21 WrapperNode [2019-10-02 13:04:21,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 13:04:21,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 13:04:21,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 13:04:21,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 13:04:21,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... [2019-10-02 13:04:21,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 13:04:21,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 13:04:21,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 13:04:21,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 13:04:21,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 13:04:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 13:04:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 13:04:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-02 13:04:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-02 13:04:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-02 13:04:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-02 13:04:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-02 13:04:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-02 13:04:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-02 13:04:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-02 13:04:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-02 13:04:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-02 13:04:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 13:04:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-02 13:04:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-02 13:04:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-02 13:04:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-02 13:04:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-02 13:04:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-02 13:04:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-02 13:04:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-02 13:04:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-02 13:04:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-02 13:04:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-02 13:04:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-02 13:04:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-02 13:04:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-02 13:04:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-02 13:04:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-02 13:04:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-02 13:04:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-02 13:04:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-02 13:04:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-02 13:04:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-02 13:04:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-02 13:04:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-02 13:04:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-02 13:04:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-02 13:04:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-02 13:04:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-02 13:04:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-02 13:04:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-02 13:04:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-02 13:04:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-02 13:04:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-02 13:04:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-02 13:04:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-02 13:04:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-02 13:04:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-02 13:04:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-02 13:04:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-02 13:04:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-02 13:04:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-02 13:04:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-02 13:04:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-02 13:04:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-02 13:04:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-02 13:04:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-02 13:04:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-02 13:04:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-02 13:04:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-02 13:04:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-02 13:04:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-02 13:04:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-02 13:04:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-02 13:04:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-02 13:04:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-02 13:04:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-02 13:04:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-02 13:04:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-02 13:04:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-02 13:04:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-02 13:04:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-02 13:04:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-02 13:04:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-02 13:04:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-02 13:04:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-02 13:04:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-02 13:04:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-02 13:04:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-02 13:04:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-02 13:04:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-02 13:04:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-02 13:04:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-02 13:04:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-02 13:04:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-02 13:04:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-02 13:04:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-02 13:04:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-02 13:04:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-02 13:04:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-02 13:04:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-02 13:04:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-02 13:04:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-02 13:04:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-02 13:04:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-02 13:04:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-02 13:04:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-02 13:04:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-02 13:04:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 13:04:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 13:04:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-02 13:04:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-02 13:04:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-02 13:04:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-02 13:04:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-02 13:04:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-02 13:04:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-02 13:04:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-02 13:04:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-02 13:04:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-02 13:04:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-02 13:04:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-02 13:04:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-02 13:04:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-02 13:04:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-02 13:04:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-02 13:04:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-02 13:04:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-02 13:04:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-02 13:04:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-02 13:04:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 13:04:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-02 13:04:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-02 13:04:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-02 13:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-02 13:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-02 13:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-02 13:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-02 13:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 13:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-02 13:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 13:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-02 13:04:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-02 13:04:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-02 13:04:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-02 13:04:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-02 13:04:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-02 13:04:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-02 13:04:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-02 13:04:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-02 13:04:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-02 13:04:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-02 13:04:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-02 13:04:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-02 13:04:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-02 13:04:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 13:04:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 13:04:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 13:04:23,651 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 13:04:23,651 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-02 13:04:23,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 01:04:23 BoogieIcfgContainer [2019-10-02 13:04:23,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 13:04:23,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 13:04:23,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 13:04:23,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 13:04:23,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 01:04:20" (1/3) ... [2019-10-02 13:04:23,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3880c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 01:04:23, skipping insertion in model container [2019-10-02 13:04:23,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:04:21" (2/3) ... [2019-10-02 13:04:23,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3880c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 01:04:23, skipping insertion in model container [2019-10-02 13:04:23,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 01:04:23" (3/3) ... [2019-10-02 13:04:23,662 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2019-10-02 13:04:23,672 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 13:04:23,685 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 13:04:23,703 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 13:04:23,751 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 13:04:23,751 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 13:04:23,752 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 13:04:23,752 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 13:04:23,752 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 13:04:23,752 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 13:04:23,752 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 13:04:23,752 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 13:04:23,752 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 13:04:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states. [2019-10-02 13:04:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-02 13:04:23,828 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:23,829 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:23,833 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:23,843 INFO L82 PathProgramCache]: Analyzing trace with hash 4882894, now seen corresponding path program 1 times [2019-10-02 13:04:23,846 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:23,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:23,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:23,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:23,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:04:24,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:24,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 13:04:24,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 13:04:24,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 13:04:24,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 13:04:24,572 INFO L87 Difference]: Start difference. First operand 484 states. Second operand 2 states. [2019-10-02 13:04:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:24,642 INFO L93 Difference]: Finished difference Result 676 states and 891 transitions. [2019-10-02 13:04:24,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 13:04:24,643 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-10-02 13:04:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:24,717 INFO L225 Difference]: With dead ends: 676 [2019-10-02 13:04:24,717 INFO L226 Difference]: Without dead ends: 444 [2019-10-02 13:04:24,727 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 13:04:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-02 13:04:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2019-10-02 13:04:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2019-10-02 13:04:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 588 transitions. [2019-10-02 13:04:24,871 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 588 transitions. Word has length 179 [2019-10-02 13:04:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:24,874 INFO L475 AbstractCegarLoop]: Abstraction has 444 states and 588 transitions. [2019-10-02 13:04:24,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 13:04:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 588 transitions. [2019-10-02 13:04:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-02 13:04:24,888 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:24,889 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:24,889 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash -372709569, now seen corresponding path program 1 times [2019-10-02 13:04:24,890 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:24,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:24,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:24,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:24,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:04:25,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:25,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:04:25,204 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:04:25,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:04:25,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:25,205 INFO L87 Difference]: Start difference. First operand 444 states and 588 transitions. Second operand 3 states. [2019-10-02 13:04:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:25,274 INFO L93 Difference]: Finished difference Result 659 states and 856 transitions. [2019-10-02 13:04:25,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:04:25,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-02 13:04:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:25,281 INFO L225 Difference]: With dead ends: 659 [2019-10-02 13:04:25,281 INFO L226 Difference]: Without dead ends: 447 [2019-10-02 13:04:25,296 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-02 13:04:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2019-10-02 13:04:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-10-02 13:04:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 590 transitions. [2019-10-02 13:04:25,322 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 590 transitions. Word has length 180 [2019-10-02 13:04:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:25,323 INFO L475 AbstractCegarLoop]: Abstraction has 446 states and 590 transitions. [2019-10-02 13:04:25,323 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:04:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 590 transitions. [2019-10-02 13:04:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-02 13:04:25,327 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:25,327 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:25,328 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:25,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1430696527, now seen corresponding path program 1 times [2019-10-02 13:04:25,328 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:25,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:25,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:25,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:04:25,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:25,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:04:25,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:04:25,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:04:25,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:25,538 INFO L87 Difference]: Start difference. First operand 446 states and 590 transitions. Second operand 3 states. [2019-10-02 13:04:25,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:25,576 INFO L93 Difference]: Finished difference Result 868 states and 1178 transitions. [2019-10-02 13:04:25,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:04:25,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-02 13:04:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:25,582 INFO L225 Difference]: With dead ends: 868 [2019-10-02 13:04:25,583 INFO L226 Difference]: Without dead ends: 487 [2019-10-02 13:04:25,584 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2019-10-02 13:04:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2019-10-02 13:04:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-10-02 13:04:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 659 transitions. [2019-10-02 13:04:25,617 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 659 transitions. Word has length 190 [2019-10-02 13:04:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:25,619 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 659 transitions. [2019-10-02 13:04:25,619 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:04:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 659 transitions. [2019-10-02 13:04:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-02 13:04:25,637 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:25,637 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:25,637 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:25,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:25,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1249737572, now seen corresponding path program 1 times [2019-10-02 13:04:25,638 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:25,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:25,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:25,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:04:25,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:25,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:04:25,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:04:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:04:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:25,795 INFO L87 Difference]: Start difference. First operand 486 states and 659 transitions. Second operand 3 states. [2019-10-02 13:04:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:25,828 INFO L93 Difference]: Finished difference Result 985 states and 1380 transitions. [2019-10-02 13:04:25,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:04:25,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-02 13:04:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:25,833 INFO L225 Difference]: With dead ends: 985 [2019-10-02 13:04:25,833 INFO L226 Difference]: Without dead ends: 564 [2019-10-02 13:04:25,836 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-02 13:04:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 563. [2019-10-02 13:04:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2019-10-02 13:04:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 791 transitions. [2019-10-02 13:04:25,866 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 791 transitions. Word has length 191 [2019-10-02 13:04:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:25,867 INFO L475 AbstractCegarLoop]: Abstraction has 563 states and 791 transitions. [2019-10-02 13:04:25,867 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:04:25,868 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 791 transitions. [2019-10-02 13:04:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-02 13:04:25,876 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:25,876 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:25,877 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash -774880689, now seen corresponding path program 1 times [2019-10-02 13:04:25,878 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:25,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:25,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:25,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:04:26,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:26,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:04:26,158 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:04:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:04:26,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:26,160 INFO L87 Difference]: Start difference. First operand 563 states and 791 transitions. Second operand 3 states. [2019-10-02 13:04:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:26,221 INFO L93 Difference]: Finished difference Result 1210 states and 1766 transitions. [2019-10-02 13:04:26,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:04:26,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-02 13:04:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:26,228 INFO L225 Difference]: With dead ends: 1210 [2019-10-02 13:04:26,229 INFO L226 Difference]: Without dead ends: 712 [2019-10-02 13:04:26,232 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-10-02 13:04:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 711. [2019-10-02 13:04:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-10-02 13:04:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1043 transitions. [2019-10-02 13:04:26,393 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1043 transitions. Word has length 192 [2019-10-02 13:04:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:26,394 INFO L475 AbstractCegarLoop]: Abstraction has 711 states and 1043 transitions. [2019-10-02 13:04:26,394 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:04:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1043 transitions. [2019-10-02 13:04:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-02 13:04:26,399 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:26,400 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:26,400 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:26,401 INFO L82 PathProgramCache]: Analyzing trace with hash 569944220, now seen corresponding path program 1 times [2019-10-02 13:04:26,401 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:26,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:26,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:26,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:26,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:04:26,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:26,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:04:26,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:04:26,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:04:26,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:26,581 INFO L87 Difference]: Start difference. First operand 711 states and 1043 transitions. Second operand 3 states. [2019-10-02 13:04:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:26,637 INFO L93 Difference]: Finished difference Result 1642 states and 2502 transitions. [2019-10-02 13:04:26,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:04:26,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-02 13:04:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:26,646 INFO L225 Difference]: With dead ends: 1642 [2019-10-02 13:04:26,646 INFO L226 Difference]: Without dead ends: 996 [2019-10-02 13:04:26,649 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:04:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-02 13:04:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 995. [2019-10-02 13:04:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-10-02 13:04:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1523 transitions. [2019-10-02 13:04:26,693 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1523 transitions. Word has length 193 [2019-10-02 13:04:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:26,695 INFO L475 AbstractCegarLoop]: Abstraction has 995 states and 1523 transitions. [2019-10-02 13:04:26,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:04:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1523 transitions. [2019-10-02 13:04:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-02 13:04:26,702 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:26,703 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:26,703 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2027889146, now seen corresponding path program 1 times [2019-10-02 13:04:26,705 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:26,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:26,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:26,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:26,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 13:04:26,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:26,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 13:04:26,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 13:04:26,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 13:04:26,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 13:04:26,927 INFO L87 Difference]: Start difference. First operand 995 states and 1523 transitions. Second operand 8 states. [2019-10-02 13:04:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:27,065 INFO L93 Difference]: Finished difference Result 1194 states and 1776 transitions. [2019-10-02 13:04:27,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 13:04:27,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-10-02 13:04:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:27,075 INFO L225 Difference]: With dead ends: 1194 [2019-10-02 13:04:27,076 INFO L226 Difference]: Without dead ends: 995 [2019-10-02 13:04:27,077 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 13:04:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-10-02 13:04:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2019-10-02 13:04:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-10-02 13:04:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1522 transitions. [2019-10-02 13:04:27,146 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1522 transitions. Word has length 196 [2019-10-02 13:04:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:27,148 INFO L475 AbstractCegarLoop]: Abstraction has 995 states and 1522 transitions. [2019-10-02 13:04:27,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 13:04:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1522 transitions. [2019-10-02 13:04:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-02 13:04:27,159 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:27,159 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:27,160 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:27,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:27,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1861004252, now seen corresponding path program 1 times [2019-10-02 13:04:27,160 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:27,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:27,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:27,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:27,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 13:04:27,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:27,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 13:04:27,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 13:04:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 13:04:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 13:04:27,480 INFO L87 Difference]: Start difference. First operand 995 states and 1522 transitions. Second operand 7 states. [2019-10-02 13:04:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:29,890 INFO L93 Difference]: Finished difference Result 1416 states and 2054 transitions. [2019-10-02 13:04:29,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 13:04:29,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-10-02 13:04:29,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:29,899 INFO L225 Difference]: With dead ends: 1416 [2019-10-02 13:04:29,899 INFO L226 Difference]: Without dead ends: 1209 [2019-10-02 13:04:29,901 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-02 13:04:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2019-10-02 13:04:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1200. [2019-10-02 13:04:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-02 13:04:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1779 transitions. [2019-10-02 13:04:29,986 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1779 transitions. Word has length 203 [2019-10-02 13:04:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:29,987 INFO L475 AbstractCegarLoop]: Abstraction has 1200 states and 1779 transitions. [2019-10-02 13:04:29,987 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 13:04:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1779 transitions. [2019-10-02 13:04:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-02 13:04:29,994 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:29,995 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:29,995 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1188466073, now seen corresponding path program 1 times [2019-10-02 13:04:29,996 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:29,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:30,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:30,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:30,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 13:04:30,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:30,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-02 13:04:30,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-02 13:04:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-02 13:04:30,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-02 13:04:30,480 INFO L87 Difference]: Start difference. First operand 1200 states and 1779 transitions. Second operand 24 states. [2019-10-02 13:04:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:31,138 INFO L93 Difference]: Finished difference Result 1692 states and 2405 transitions. [2019-10-02 13:04:31,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-02 13:04:31,139 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 204 [2019-10-02 13:04:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:31,146 INFO L225 Difference]: With dead ends: 1692 [2019-10-02 13:04:31,147 INFO L226 Difference]: Without dead ends: 1242 [2019-10-02 13:04:31,151 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-02 13:04:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2019-10-02 13:04:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1238. [2019-10-02 13:04:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2019-10-02 13:04:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1823 transitions. [2019-10-02 13:04:31,223 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1823 transitions. Word has length 204 [2019-10-02 13:04:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:31,224 INFO L475 AbstractCegarLoop]: Abstraction has 1238 states and 1823 transitions. [2019-10-02 13:04:31,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-02 13:04:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1823 transitions. [2019-10-02 13:04:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-02 13:04:31,233 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:31,233 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:31,233 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:31,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1681156270, now seen corresponding path program 1 times [2019-10-02 13:04:31,234 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:31,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:31,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:31,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:31,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-02 13:04:31,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:31,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 13:04:31,489 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 13:04:31,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 13:04:31,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 13:04:31,490 INFO L87 Difference]: Start difference. First operand 1238 states and 1823 transitions. Second operand 8 states. [2019-10-02 13:04:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:35,690 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2019-10-02 13:04:35,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 13:04:35,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2019-10-02 13:04:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:35,715 INFO L225 Difference]: With dead ends: 2604 [2019-10-02 13:04:35,715 INFO L226 Difference]: Without dead ends: 2176 [2019-10-02 13:04:35,718 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-02 13:04:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-10-02 13:04:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2162. [2019-10-02 13:04:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2162 states. [2019-10-02 13:04:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2999 transitions. [2019-10-02 13:04:35,831 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2999 transitions. Word has length 235 [2019-10-02 13:04:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:35,832 INFO L475 AbstractCegarLoop]: Abstraction has 2162 states and 2999 transitions. [2019-10-02 13:04:35,832 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 13:04:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2999 transitions. [2019-10-02 13:04:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-02 13:04:35,841 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:35,841 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:35,841 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:35,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1634971345, now seen corresponding path program 1 times [2019-10-02 13:04:35,842 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:35,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:35,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:35,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:35,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-02 13:04:36,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:04:36,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-02 13:04:36,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-02 13:04:36,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-02 13:04:36,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-02 13:04:36,178 INFO L87 Difference]: Start difference. First operand 2162 states and 2999 transitions. Second operand 18 states. [2019-10-02 13:04:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:36,588 INFO L93 Difference]: Finished difference Result 2816 states and 3830 transitions. [2019-10-02 13:04:36,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-02 13:04:36,589 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 236 [2019-10-02 13:04:36,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:36,606 INFO L225 Difference]: With dead ends: 2816 [2019-10-02 13:04:36,607 INFO L226 Difference]: Without dead ends: 1797 [2019-10-02 13:04:36,614 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-02 13:04:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-10-02 13:04:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1791. [2019-10-02 13:04:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-10-02 13:04:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2541 transitions. [2019-10-02 13:04:36,794 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2541 transitions. Word has length 236 [2019-10-02 13:04:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:36,797 INFO L475 AbstractCegarLoop]: Abstraction has 1791 states and 2541 transitions. [2019-10-02 13:04:36,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-02 13:04:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2541 transitions. [2019-10-02 13:04:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-02 13:04:36,807 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:36,807 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:36,808 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:36,808 INFO L82 PathProgramCache]: Analyzing trace with hash 210736296, now seen corresponding path program 1 times [2019-10-02 13:04:36,808 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:36,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:36,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:36,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:36,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-02 13:04:37,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:04:37,031 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-10-02 13:04:37,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:37,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:04:37,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:04:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-02 13:04:37,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:04:37,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2019-10-02 13:04:37,863 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-02 13:04:37,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-02 13:04:37,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-02 13:04:37,869 INFO L87 Difference]: Start difference. First operand 1791 states and 2541 transitions. Second operand 14 states. [2019-10-02 13:04:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:42,398 INFO L93 Difference]: Finished difference Result 6245 states and 8936 transitions. [2019-10-02 13:04:42,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-02 13:04:42,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 245 [2019-10-02 13:04:42,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:42,427 INFO L225 Difference]: With dead ends: 6245 [2019-10-02 13:04:42,428 INFO L226 Difference]: Without dead ends: 4488 [2019-10-02 13:04:42,482 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2019-10-02 13:04:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2019-10-02 13:04:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4374. [2019-10-02 13:04:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4374 states. [2019-10-02 13:04:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 6231 transitions. [2019-10-02 13:04:42,749 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 6231 transitions. Word has length 245 [2019-10-02 13:04:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:42,750 INFO L475 AbstractCegarLoop]: Abstraction has 4374 states and 6231 transitions. [2019-10-02 13:04:42,750 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-02 13:04:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 6231 transitions. [2019-10-02 13:04:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-02 13:04:42,766 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:42,766 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:42,767 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1666152744, now seen corresponding path program 1 times [2019-10-02 13:04:42,768 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:42,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:42,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:42,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:42,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-02 13:04:43,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:04:43,122 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:04:43,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:43,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 13:04:43,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:04:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-10-02 13:04:44,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:04:44,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2019-10-02 13:04:44,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 13:04:44,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 13:04:44,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-02 13:04:44,062 INFO L87 Difference]: Start difference. First operand 4374 states and 6231 transitions. Second operand 12 states. [2019-10-02 13:04:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:47,550 INFO L93 Difference]: Finished difference Result 15325 states and 22015 transitions. [2019-10-02 13:04:47,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-02 13:04:47,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 247 [2019-10-02 13:04:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:47,625 INFO L225 Difference]: With dead ends: 15325 [2019-10-02 13:04:47,625 INFO L226 Difference]: Without dead ends: 10996 [2019-10-02 13:04:47,647 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2019-10-02 13:04:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10996 states. [2019-10-02 13:04:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10996 to 10567. [2019-10-02 13:04:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10567 states. [2019-10-02 13:04:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 15130 transitions. [2019-10-02 13:04:48,262 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 15130 transitions. Word has length 247 [2019-10-02 13:04:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:48,263 INFO L475 AbstractCegarLoop]: Abstraction has 10567 states and 15130 transitions. [2019-10-02 13:04:48,263 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 13:04:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 15130 transitions. [2019-10-02 13:04:48,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-02 13:04:48,288 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:48,289 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:48,289 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:48,290 INFO L82 PathProgramCache]: Analyzing trace with hash -403421797, now seen corresponding path program 1 times [2019-10-02 13:04:48,290 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:48,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:48,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:48,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:48,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-02 13:04:48,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:04:48,474 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:04:48,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:49,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:04:49,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:04:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-02 13:04:49,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:04:49,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2019-10-02 13:04:49,620 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 13:04:49,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 13:04:49,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-02 13:04:49,621 INFO L87 Difference]: Start difference. First operand 10567 states and 15130 transitions. Second operand 12 states. [2019-10-02 13:04:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:04:53,472 INFO L93 Difference]: Finished difference Result 37550 states and 54386 transitions. [2019-10-02 13:04:53,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-02 13:04:53,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 248 [2019-10-02 13:04:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:04:53,612 INFO L225 Difference]: With dead ends: 37550 [2019-10-02 13:04:53,613 INFO L226 Difference]: Without dead ends: 27028 [2019-10-02 13:04:53,653 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2019-10-02 13:04:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2019-10-02 13:04:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 26690. [2019-10-02 13:04:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26690 states. [2019-10-02 13:04:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26690 states to 26690 states and 38390 transitions. [2019-10-02 13:04:55,032 INFO L78 Accepts]: Start accepts. Automaton has 26690 states and 38390 transitions. Word has length 248 [2019-10-02 13:04:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:04:55,033 INFO L475 AbstractCegarLoop]: Abstraction has 26690 states and 38390 transitions. [2019-10-02 13:04:55,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 13:04:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 26690 states and 38390 transitions. [2019-10-02 13:04:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-02 13:04:55,093 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:04:55,094 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:04:55,094 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:04:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:04:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1255323543, now seen corresponding path program 1 times [2019-10-02 13:04:55,095 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:04:55,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:04:55,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:55,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:55,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:04:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-02 13:04:55,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:04:55,757 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:04:55,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:04:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:04:56,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 2779 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:04:56,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:04:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-02 13:04:56,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:04:56,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [29] total 36 [2019-10-02 13:04:56,707 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-02 13:04:56,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-02 13:04:56,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2019-10-02 13:04:56,708 INFO L87 Difference]: Start difference. First operand 26690 states and 38390 transitions. Second operand 36 states. [2019-10-02 13:05:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:44,236 INFO L93 Difference]: Finished difference Result 260538 states and 383162 transitions. [2019-10-02 13:05:44,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2019-10-02 13:05:44,237 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 250 [2019-10-02 13:05:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:45,387 INFO L225 Difference]: With dead ends: 260538 [2019-10-02 13:05:45,387 INFO L226 Difference]: Without dead ends: 233836 [2019-10-02 13:05:45,566 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6755 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1920, Invalid=21032, Unknown=0, NotChecked=0, Total=22952 [2019-10-02 13:05:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233836 states. [2019-10-02 13:05:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233836 to 172258. [2019-10-02 13:05:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172258 states. [2019-10-02 13:05:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172258 states to 172258 states and 252108 transitions. [2019-10-02 13:05:58,720 INFO L78 Accepts]: Start accepts. Automaton has 172258 states and 252108 transitions. Word has length 250 [2019-10-02 13:05:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:58,721 INFO L475 AbstractCegarLoop]: Abstraction has 172258 states and 252108 transitions. [2019-10-02 13:05:58,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-02 13:05:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 172258 states and 252108 transitions. [2019-10-02 13:05:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-02 13:05:58,973 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:58,974 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:05:58,974 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:58,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash 783846962, now seen corresponding path program 1 times [2019-10-02 13:05:58,975 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:58,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:58,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:58,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:58,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-02 13:05:59,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:05:59,563 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:05:59,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:06:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:06:00,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 13:06:00,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:06:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-02 13:06:00,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:06:00,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2019-10-02 13:06:00,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-02 13:06:00,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-02 13:06:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2019-10-02 13:06:00,366 INFO L87 Difference]: Start difference. First operand 172258 states and 252108 transitions. Second operand 34 states. [2019-10-02 13:07:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:07:20,445 INFO L93 Difference]: Finished difference Result 955919 states and 1411736 transitions. [2019-10-02 13:07:20,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2019-10-02 13:07:20,445 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 251 [2019-10-02 13:07:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:07:24,125 INFO L225 Difference]: With dead ends: 955919 [2019-10-02 13:07:24,126 INFO L226 Difference]: Without dead ends: 783154 [2019-10-02 13:07:24,696 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6741 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1908, Invalid=21044, Unknown=0, NotChecked=0, Total=22952 [2019-10-02 13:07:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783154 states. [2019-10-02 13:08:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783154 to 614070. [2019-10-02 13:08:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614070 states. [2019-10-02 13:08:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614070 states to 614070 states and 895611 transitions. [2019-10-02 13:08:25,689 INFO L78 Accepts]: Start accepts. Automaton has 614070 states and 895611 transitions. Word has length 251 [2019-10-02 13:08:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:08:25,690 INFO L475 AbstractCegarLoop]: Abstraction has 614070 states and 895611 transitions. [2019-10-02 13:08:25,690 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-02 13:08:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 614070 states and 895611 transitions. [2019-10-02 13:08:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-02 13:08:28,150 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:08:28,150 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:08:28,151 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:08:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:08:28,151 INFO L82 PathProgramCache]: Analyzing trace with hash 600882508, now seen corresponding path program 1 times [2019-10-02 13:08:28,151 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:08:28,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:08:28,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:08:28,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:08:28,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:08:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:08:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-02 13:08:28,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:08:28,326 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:08:28,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:08:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:08:28,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:08:28,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:08:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 13:08:29,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:08:29,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2019-10-02 13:08:29,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-02 13:08:29,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-02 13:08:29,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-10-02 13:08:29,148 INFO L87 Difference]: Start difference. First operand 614070 states and 895611 transitions. Second operand 16 states. [2019-10-02 13:08:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:08:50,494 INFO L93 Difference]: Finished difference Result 660700 states and 961006 transitions. [2019-10-02 13:08:50,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-02 13:08:50,494 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 253 [2019-10-02 13:08:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:08:53,131 INFO L225 Difference]: With dead ends: 660700 [2019-10-02 13:08:53,131 INFO L226 Difference]: Without dead ends: 376854 [2019-10-02 13:08:53,524 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2019-10-02 13:08:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376854 states. [2019-10-02 13:09:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376854 to 376850. [2019-10-02 13:09:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376850 states. [2019-10-02 13:09:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376850 states to 376850 states and 545594 transitions. [2019-10-02 13:09:31,844 INFO L78 Accepts]: Start accepts. Automaton has 376850 states and 545594 transitions. Word has length 253 [2019-10-02 13:09:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:09:31,845 INFO L475 AbstractCegarLoop]: Abstraction has 376850 states and 545594 transitions. [2019-10-02 13:09:31,845 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-02 13:09:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 376850 states and 545594 transitions. [2019-10-02 13:09:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-02 13:09:32,018 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:09:32,018 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:09:32,019 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:09:32,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:09:32,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1363549756, now seen corresponding path program 1 times [2019-10-02 13:09:32,019 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:09:32,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:09:32,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:09:32,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:09:32,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:09:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:09:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-02 13:09:33,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:09:33,603 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:09:33,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:09:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:09:34,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 13:09:34,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:09:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-02 13:09:34,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:09:34,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2019-10-02 13:09:34,427 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-02 13:09:34,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-02 13:09:34,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2019-10-02 13:09:34,429 INFO L87 Difference]: Start difference. First operand 376850 states and 545594 transitions. Second operand 34 states. [2019-10-02 13:11:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:11:12,728 INFO L93 Difference]: Finished difference Result 1592712 states and 2321866 transitions. [2019-10-02 13:11:12,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-10-02 13:11:12,729 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 253 [2019-10-02 13:11:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:11:17,529 INFO L225 Difference]: With dead ends: 1592712 [2019-10-02 13:11:17,529 INFO L226 Difference]: Without dead ends: 1214748 [2019-10-02 13:11:18,302 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1111, Invalid=10445, Unknown=0, NotChecked=0, Total=11556 [2019-10-02 13:11:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214748 states. [2019-10-02 13:13:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214748 to 1031850. [2019-10-02 13:13:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031850 states. [2019-10-02 13:13:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031850 states to 1031850 states and 1493159 transitions. [2019-10-02 13:13:16,092 INFO L78 Accepts]: Start accepts. Automaton has 1031850 states and 1493159 transitions. Word has length 253 [2019-10-02 13:13:16,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:13:16,093 INFO L475 AbstractCegarLoop]: Abstraction has 1031850 states and 1493159 transitions. [2019-10-02 13:13:16,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-02 13:13:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1031850 states and 1493159 transitions. [2019-10-02 13:13:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-02 13:13:16,335 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:13:16,336 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:13:16,336 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:13:16,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:13:16,337 INFO L82 PathProgramCache]: Analyzing trace with hash -167519183, now seen corresponding path program 1 times [2019-10-02 13:13:16,337 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:13:16,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:13:16,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:13:16,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:13:16,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:13:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:13:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-02 13:13:16,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:13:16,673 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:13:16,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:13:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:13:17,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 13:13:17,227 INFO L279 TraceCheckSpWp]: Computing forward predicates...