java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:31,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:31,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:31,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:31,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:31,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:31,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:31,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:31,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:31,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:31,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:31,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:31,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:31,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:31,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:31,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:31,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:31,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:31,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:31,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:31,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:31,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:31,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:31,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:31,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:31,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:31,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:31,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:31,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:31,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:31,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:31,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:31,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:31,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:31,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:31,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:31,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:31,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:31,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:31,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:31,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:31,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:31,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:31,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:31,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:31,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:31,506 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:31,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:31,506 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:31,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:31,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:31,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:31,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:31,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:31,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:31,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:31,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:31,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:31,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:31,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:31,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:31,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:31,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:31,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:31,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:31,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:31,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:31,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:31,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:31,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:31,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:31,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:31,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:31,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:31,825 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:31,825 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:31,826 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c [2019-10-15 01:15:31,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460acb97b/f69da9d88b894d81a3a28a31e78a47c5/FLAG694b08c5c [2019-10-15 01:15:32,587 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:32,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c [2019-10-15 01:15:32,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460acb97b/f69da9d88b894d81a3a28a31e78a47c5/FLAG694b08c5c [2019-10-15 01:15:32,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460acb97b/f69da9d88b894d81a3a28a31e78a47c5 [2019-10-15 01:15:32,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:32,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:32,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:32,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:32,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:32,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:32" (1/1) ... [2019-10-15 01:15:32,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1763af5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:32, skipping insertion in model container [2019-10-15 01:15:32,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:32" (1/1) ... [2019-10-15 01:15:32,805 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:32,894 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:33,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:33,695 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:33,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:33,912 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:33,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33 WrapperNode [2019-10-15 01:15:33,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:33,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:33,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:33,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:33,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:33,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:33,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:33,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:34,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:34,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:34,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... [2019-10-15 01:15:34,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:34,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:34,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:34,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:34,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:34,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:15:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:15:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:15:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:15:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:15:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:36,611 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:36,611 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:36,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:36 BoogieIcfgContainer [2019-10-15 01:15:36,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:36,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:36,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:36,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:36,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:32" (1/3) ... [2019-10-15 01:15:36,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed1a8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:36, skipping insertion in model container [2019-10-15 01:15:36,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:33" (2/3) ... [2019-10-15 01:15:36,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed1a8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:36, skipping insertion in model container [2019-10-15 01:15:36,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:36" (3/3) ... [2019-10-15 01:15:36,621 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product24.cil.c [2019-10-15 01:15:36,632 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:36,642 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:36,654 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:36,685 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:36,685 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:36,685 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:36,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:36,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:36,686 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:36,686 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:36,686 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states. [2019-10-15 01:15:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:15:36,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:36,738 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:36,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1143948929, now seen corresponding path program 1 times [2019-10-15 01:15:36,757 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:36,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507855540] [2019-10-15 01:15:36,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,758 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:37,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507855540] [2019-10-15 01:15:37,464 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:37,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:37,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129987454] [2019-10-15 01:15:37,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:37,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:37,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:37,492 INFO L87 Difference]: Start difference. First operand 526 states. Second operand 2 states. [2019-10-15 01:15:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:37,613 INFO L93 Difference]: Finished difference Result 783 states and 1023 transitions. [2019-10-15 01:15:37,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:37,615 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-10-15 01:15:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:37,651 INFO L225 Difference]: With dead ends: 783 [2019-10-15 01:15:37,652 INFO L226 Difference]: Without dead ends: 503 [2019-10-15 01:15:37,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2019-10-15 01:15:37,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2019-10-15 01:15:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2019-10-15 01:15:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 663 transitions. [2019-10-15 01:15:37,760 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 663 transitions. Word has length 148 [2019-10-15 01:15:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:37,763 INFO L462 AbstractCegarLoop]: Abstraction has 503 states and 663 transitions. [2019-10-15 01:15:37,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 663 transitions. [2019-10-15 01:15:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:15:37,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:37,769 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:37,770 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 400393156, now seen corresponding path program 1 times [2019-10-15 01:15:37,770 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:37,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138939186] [2019-10-15 01:15:37,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:38,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138939186] [2019-10-15 01:15:38,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:38,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:38,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057029461] [2019-10-15 01:15:38,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:38,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:38,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:38,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:38,052 INFO L87 Difference]: Start difference. First operand 503 states and 663 transitions. Second operand 3 states. [2019-10-15 01:15:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:38,155 INFO L93 Difference]: Finished difference Result 766 states and 992 transitions. [2019-10-15 01:15:38,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:38,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:15:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:38,165 INFO L225 Difference]: With dead ends: 766 [2019-10-15 01:15:38,165 INFO L226 Difference]: Without dead ends: 506 [2019-10-15 01:15:38,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-10-15 01:15:38,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 505. [2019-10-15 01:15:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-15 01:15:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 665 transitions. [2019-10-15 01:15:38,244 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 665 transitions. Word has length 149 [2019-10-15 01:15:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:38,245 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 665 transitions. [2019-10-15 01:15:38,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 665 transitions. [2019-10-15 01:15:38,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:15:38,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:38,253 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:38,253 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:38,253 INFO L82 PathProgramCache]: Analyzing trace with hash 801384450, now seen corresponding path program 1 times [2019-10-15 01:15:38,254 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:38,254 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373467328] [2019-10-15 01:15:38,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:38,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373467328] [2019-10-15 01:15:38,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:38,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:38,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504457482] [2019-10-15 01:15:38,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:38,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:38,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:38,546 INFO L87 Difference]: Start difference. First operand 505 states and 665 transitions. Second operand 3 states. [2019-10-15 01:15:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:38,616 INFO L93 Difference]: Finished difference Result 988 states and 1331 transitions. [2019-10-15 01:15:38,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:38,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:15:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:38,627 INFO L225 Difference]: With dead ends: 988 [2019-10-15 01:15:38,627 INFO L226 Difference]: Without dead ends: 548 [2019-10-15 01:15:38,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-10-15 01:15:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2019-10-15 01:15:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-10-15 01:15:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 737 transitions. [2019-10-15 01:15:38,677 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 737 transitions. Word has length 161 [2019-10-15 01:15:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:38,678 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 737 transitions. [2019-10-15 01:15:38,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 737 transitions. [2019-10-15 01:15:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:15:38,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:38,692 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:38,692 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 710621825, now seen corresponding path program 1 times [2019-10-15 01:15:38,693 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:38,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240587643] [2019-10-15 01:15:38,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:38,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240587643] [2019-10-15 01:15:38,954 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:38,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:38,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107464778] [2019-10-15 01:15:38,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:38,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:38,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:38,956 INFO L87 Difference]: Start difference. First operand 547 states and 737 transitions. Second operand 3 states. [2019-10-15 01:15:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:38,998 INFO L93 Difference]: Finished difference Result 1111 states and 1542 transitions. [2019-10-15 01:15:38,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:38,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:15:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:39,005 INFO L225 Difference]: With dead ends: 1111 [2019-10-15 01:15:39,006 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:15:39,009 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:15:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-10-15 01:15:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:15:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 875 transitions. [2019-10-15 01:15:39,050 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 875 transitions. Word has length 162 [2019-10-15 01:15:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:39,050 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 875 transitions. [2019-10-15 01:15:39,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 875 transitions. [2019-10-15 01:15:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:15:39,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:39,058 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:39,058 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1652131102, now seen corresponding path program 1 times [2019-10-15 01:15:39,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:39,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282382760] [2019-10-15 01:15:39,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:39,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282382760] [2019-10-15 01:15:39,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:39,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:39,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172035229] [2019-10-15 01:15:39,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:39,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:39,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:39,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:39,408 INFO L87 Difference]: Start difference. First operand 628 states and 875 transitions. Second operand 7 states. [2019-10-15 01:15:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:42,684 INFO L93 Difference]: Finished difference Result 1140 states and 1524 transitions. [2019-10-15 01:15:42,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:42,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-15 01:15:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:42,691 INFO L225 Difference]: With dead ends: 1140 [2019-10-15 01:15:42,691 INFO L226 Difference]: Without dead ends: 891 [2019-10-15 01:15:42,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2019-10-15 01:15:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 882. [2019-10-15 01:15:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2019-10-15 01:15:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1198 transitions. [2019-10-15 01:15:42,740 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1198 transitions. Word has length 165 [2019-10-15 01:15:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:42,741 INFO L462 AbstractCegarLoop]: Abstraction has 882 states and 1198 transitions. [2019-10-15 01:15:42,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1198 transitions. [2019-10-15 01:15:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:15:42,745 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,746 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:42,746 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash -179891340, now seen corresponding path program 1 times [2019-10-15 01:15:42,747 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725933285] [2019-10-15 01:15:42,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:43,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725933285] [2019-10-15 01:15:43,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:15:43,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922630318] [2019-10-15 01:15:43,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:43,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:43,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:43,071 INFO L87 Difference]: Start difference. First operand 882 states and 1198 transitions. Second operand 16 states. [2019-10-15 01:15:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:43,483 INFO L93 Difference]: Finished difference Result 1441 states and 1915 transitions. [2019-10-15 01:15:43,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:15:43,483 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2019-10-15 01:15:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:43,490 INFO L225 Difference]: With dead ends: 1441 [2019-10-15 01:15:43,490 INFO L226 Difference]: Without dead ends: 914 [2019-10-15 01:15:43,493 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2019-10-15 01:15:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 910. [2019-10-15 01:15:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-15 01:15:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1235 transitions. [2019-10-15 01:15:43,544 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1235 transitions. Word has length 166 [2019-10-15 01:15:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:43,546 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1235 transitions. [2019-10-15 01:15:43,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1235 transitions. [2019-10-15 01:15:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:15:43,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:43,550 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:43,550 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:43,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1824277491, now seen corresponding path program 1 times [2019-10-15 01:15:43,551 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:43,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022037443] [2019-10-15 01:15:43,551 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,552 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:43,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022037443] [2019-10-15 01:15:43,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:43,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380381899] [2019-10-15 01:15:43,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:43,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:43,804 INFO L87 Difference]: Start difference. First operand 910 states and 1235 transitions. Second operand 8 states. [2019-10-15 01:15:44,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:44,940 INFO L93 Difference]: Finished difference Result 1561 states and 2068 transitions. [2019-10-15 01:15:44,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:44,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-10-15 01:15:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:44,955 INFO L225 Difference]: With dead ends: 1561 [2019-10-15 01:15:44,955 INFO L226 Difference]: Without dead ends: 1474 [2019-10-15 01:15:44,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2019-10-15 01:15:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1461. [2019-10-15 01:15:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2019-10-15 01:15:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1946 transitions. [2019-10-15 01:15:45,051 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1946 transitions. Word has length 175 [2019-10-15 01:15:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:45,054 INFO L462 AbstractCegarLoop]: Abstraction has 1461 states and 1946 transitions. [2019-10-15 01:15:45,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1946 transitions. [2019-10-15 01:15:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:45,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:45,059 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:45,060 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:45,060 INFO L82 PathProgramCache]: Analyzing trace with hash -819623501, now seen corresponding path program 1 times [2019-10-15 01:15:45,060 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:45,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548930873] [2019-10-15 01:15:45,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:45,441 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548930873] [2019-10-15 01:15:45,441 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:45,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:15:45,442 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997081358] [2019-10-15 01:15:45,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:45,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:45,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:15:45,444 INFO L87 Difference]: Start difference. First operand 1461 states and 1946 transitions. Second operand 15 states. [2019-10-15 01:15:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:46,068 INFO L93 Difference]: Finished difference Result 1982 states and 2605 transitions. [2019-10-15 01:15:46,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 01:15:46,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 176 [2019-10-15 01:15:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:46,080 INFO L225 Difference]: With dead ends: 1982 [2019-10-15 01:15:46,080 INFO L226 Difference]: Without dead ends: 1460 [2019-10-15 01:15:46,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2019-10-15 01:15:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1459. [2019-10-15 01:15:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2019-10-15 01:15:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1941 transitions. [2019-10-15 01:15:46,174 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1941 transitions. Word has length 176 [2019-10-15 01:15:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:46,175 INFO L462 AbstractCegarLoop]: Abstraction has 1459 states and 1941 transitions. [2019-10-15 01:15:46,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1941 transitions. [2019-10-15 01:15:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:46,179 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:46,179 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:46,180 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash -429039633, now seen corresponding path program 2 times [2019-10-15 01:15:46,180 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:46,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963683956] [2019-10-15 01:15:46,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:46,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:46,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:46,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963683956] [2019-10-15 01:15:46,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194710170] [2019-10-15 01:15:46,402 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:46,890 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:46,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:46,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:46,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:47,121 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:47,638 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:47,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:47,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258067100] [2019-10-15 01:15:47,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:47,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:47,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:47,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:47,641 INFO L87 Difference]: Start difference. First operand 1459 states and 1941 transitions. Second operand 14 states. [2019-10-15 01:15:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:50,306 INFO L93 Difference]: Finished difference Result 4329 states and 5810 transitions. [2019-10-15 01:15:50,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:50,307 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-10-15 01:15:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:50,340 INFO L225 Difference]: With dead ends: 4329 [2019-10-15 01:15:50,340 INFO L226 Difference]: Without dead ends: 4322 [2019-10-15 01:15:50,345 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2019-10-15 01:15:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 3217. [2019-10-15 01:15:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3217 states. [2019-10-15 01:15:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4397 transitions. [2019-10-15 01:15:50,601 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4397 transitions. Word has length 176 [2019-10-15 01:15:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:50,603 INFO L462 AbstractCegarLoop]: Abstraction has 3217 states and 4397 transitions. [2019-10-15 01:15:50,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4397 transitions. [2019-10-15 01:15:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:15:50,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:50,616 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:50,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:50,826 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash 981873406, now seen corresponding path program 1 times [2019-10-15 01:15:50,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:50,828 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250904890] [2019-10-15 01:15:50,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:50,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:50,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:51,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250904890] [2019-10-15 01:15:51,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146015589] [2019-10-15 01:15:51,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:51,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:51,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:51,909 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:52,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:52,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:52,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:15:52,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:52,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-15 01:15:52,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109654349] [2019-10-15 01:15:52,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:52,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:52,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:52,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:15:52,675 INFO L87 Difference]: Start difference. First operand 3217 states and 4397 transitions. Second operand 9 states. [2019-10-15 01:15:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:54,296 INFO L93 Difference]: Finished difference Result 6408 states and 8768 transitions. [2019-10-15 01:15:54,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:54,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2019-10-15 01:15:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:54,317 INFO L225 Difference]: With dead ends: 6408 [2019-10-15 01:15:54,317 INFO L226 Difference]: Without dead ends: 3235 [2019-10-15 01:15:54,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2019-10-15 01:15:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3235. [2019-10-15 01:15:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2019-10-15 01:15:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4418 transitions. [2019-10-15 01:15:54,539 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4418 transitions. Word has length 178 [2019-10-15 01:15:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:54,540 INFO L462 AbstractCegarLoop]: Abstraction has 3235 states and 4418 transitions. [2019-10-15 01:15:54,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4418 transitions. [2019-10-15 01:15:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:15:54,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:54,555 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:54,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:54,766 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1742506656, now seen corresponding path program 1 times [2019-10-15 01:15:54,767 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:54,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057718511] [2019-10-15 01:15:54,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:54,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:54,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:55,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057718511] [2019-10-15 01:15:55,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711667532] [2019-10-15 01:15:55,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:55,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:55,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:55,847 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:56,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:56,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:56,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:56,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-15 01:15:56,226 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354486894] [2019-10-15 01:15:56,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:56,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:56,227 INFO L87 Difference]: Start difference. First operand 3235 states and 4418 transitions. Second operand 7 states. [2019-10-15 01:15:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:57,220 INFO L93 Difference]: Finished difference Result 6378 states and 8729 transitions. [2019-10-15 01:15:57,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:57,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-10-15 01:15:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:57,239 INFO L225 Difference]: With dead ends: 6378 [2019-10-15 01:15:57,240 INFO L226 Difference]: Without dead ends: 3235 [2019-10-15 01:15:57,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2019-10-15 01:15:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3235. [2019-10-15 01:15:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2019-10-15 01:15:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4404 transitions. [2019-10-15 01:15:57,419 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4404 transitions. Word has length 179 [2019-10-15 01:15:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:57,419 INFO L462 AbstractCegarLoop]: Abstraction has 3235 states and 4404 transitions. [2019-10-15 01:15:57,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4404 transitions. [2019-10-15 01:15:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:15:57,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:57,432 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:57,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:57,649 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1605662600, now seen corresponding path program 1 times [2019-10-15 01:15:57,649 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:57,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075076325] [2019-10-15 01:15:57,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:57,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:57,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:57,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075076325] [2019-10-15 01:15:57,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750077896] [2019-10-15 01:15:57,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:58,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:58,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:58,499 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:58,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:58,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:58,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:58,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162164118] [2019-10-15 01:15:58,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:58,866 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:58,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:58,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:58,867 INFO L87 Difference]: Start difference. First operand 3235 states and 4404 transitions. Second operand 7 states. [2019-10-15 01:16:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:00,182 INFO L93 Difference]: Finished difference Result 6094 states and 8235 transitions. [2019-10-15 01:16:00,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:16:00,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2019-10-15 01:16:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:00,255 INFO L225 Difference]: With dead ends: 6094 [2019-10-15 01:16:00,255 INFO L226 Difference]: Without dead ends: 3247 [2019-10-15 01:16:00,266 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:16:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2019-10-15 01:16:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3235. [2019-10-15 01:16:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2019-10-15 01:16:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4402 transitions. [2019-10-15 01:16:00,416 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4402 transitions. Word has length 180 [2019-10-15 01:16:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:00,417 INFO L462 AbstractCegarLoop]: Abstraction has 3235 states and 4402 transitions. [2019-10-15 01:16:00,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:16:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4402 transitions. [2019-10-15 01:16:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:16:00,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:00,427 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:00,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:00,635 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1088226972, now seen corresponding path program 1 times [2019-10-15 01:16:00,636 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:00,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829108497] [2019-10-15 01:16:00,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:00,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829108497] [2019-10-15 01:16:00,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418706709] [2019-10-15 01:16:00,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:01,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:01,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:01,496 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:01,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:16:01,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:01,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:16:02,106 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:02,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:16:02,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830170950] [2019-10-15 01:16:02,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:16:02,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:02,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:16:02,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:16:02,109 INFO L87 Difference]: Start difference. First operand 3235 states and 4402 transitions. Second operand 16 states. [2019-10-15 01:16:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:04,611 INFO L93 Difference]: Finished difference Result 6406 states and 8731 transitions. [2019-10-15 01:16:04,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:16:04,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-10-15 01:16:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:04,628 INFO L225 Difference]: With dead ends: 6406 [2019-10-15 01:16:04,628 INFO L226 Difference]: Without dead ends: 3257 [2019-10-15 01:16:04,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:16:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2019-10-15 01:16:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 3255. [2019-10-15 01:16:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3255 states.