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_spec0_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:50,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:50,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:50,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:50,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:50,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:50,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:50,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:50,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:50,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:50,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:50,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:50,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:50,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:50,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:50,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:50,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:50,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:50,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:50,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:50,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:50,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:50,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:50,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:50,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:50,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:50,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:50,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:50,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:50,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:50,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:50,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:50,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:50,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:50,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:50,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:50,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:50,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:50,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:50,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:50,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:50,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:50,197 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:50,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:50,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:50,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:50,199 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:50,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:50,200 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:50,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:50,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:50,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:50,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:50,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:50,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:50,201 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:50,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:50,201 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:50,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:50,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:50,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:50,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:50,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:50,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:50,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:50,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:50,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:50,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:50,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:50,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:50,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:50,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:50,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:50,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:50,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:50,494 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:50,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c [2019-10-13 21:12:50,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f6fbad0/850667263e3a4965a7362b9a3c4449e1/FLAG626f74ddb [2019-10-13 21:12:51,193 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:51,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c [2019-10-13 21:12:51,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f6fbad0/850667263e3a4965a7362b9a3c4449e1/FLAG626f74ddb [2019-10-13 21:12:51,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f6fbad0/850667263e3a4965a7362b9a3c4449e1 [2019-10-13 21:12:51,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:51,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:51,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:51,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:51,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:51,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:51" (1/1) ... [2019-10-13 21:12:51,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3264c97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:51, skipping insertion in model container [2019-10-13 21:12:51,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:51" (1/1) ... [2019-10-13 21:12:51,439 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:51,525 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:52,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:52,276 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:52,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:52,516 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:52,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52 WrapperNode [2019-10-13 21:12:52,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:52,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:52,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:52,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:52,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... [2019-10-13 21:12:52,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:52,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:52,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:52,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:52,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:52,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:52,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:52,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:52,792 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:12:52,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:12:52,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:12:52,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:12:52,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:12:52,793 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:12:52,793 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:12:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:12:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:12:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:12:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:12:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:12:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:12:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:12:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:12:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:12:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:12:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:12:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:12:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:12:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:12:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:12:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:12:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:12:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:12:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:12:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:12:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:12:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:12:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:12:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:12:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:12:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:12:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:12:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:12:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:12:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:12:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:12:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:12:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:12:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:12:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:12:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:12:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:12:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:12:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:12:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:12:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:12:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:12:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:12:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:12:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:12:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:12:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:12:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:12:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:12:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:12:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:12:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:12:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:12:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:12:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:12:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:12:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:12:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:12:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-10-13 21:12:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:12:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:12:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:12:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:12:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:12:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:12:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:12:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:12:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:12:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:12:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:12:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:12:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:12:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:12:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:12:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:12:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:12:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:12:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:12:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:12:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:12:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:12:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:12:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:12:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:12:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:12:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:12:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:12:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:12:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:12:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:12:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:12:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:12:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:12:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:12:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:12:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:12:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:12:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:12:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:12:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:12:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:12:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:12:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:12:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:12:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:12:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:12:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:12:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:12:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:12:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:54,730 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:54,730 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:12:54,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:54 BoogieIcfgContainer [2019-10-13 21:12:54,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:54,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:54,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:54,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:54,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:51" (1/3) ... [2019-10-13 21:12:54,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518f5b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:54, skipping insertion in model container [2019-10-13 21:12:54,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:52" (2/3) ... [2019-10-13 21:12:54,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518f5b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:54, skipping insertion in model container [2019-10-13 21:12:54,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:54" (3/3) ... [2019-10-13 21:12:54,740 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2019-10-13 21:12:54,750 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:54,760 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:54,773 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:54,804 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:54,804 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:54,804 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:54,805 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:54,805 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:54,805 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:54,805 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:54,805 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states. [2019-10-13 21:12:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:12:54,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:54,861 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:54,863 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:54,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1106336923, now seen corresponding path program 1 times [2019-10-13 21:12:54,881 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:54,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388048639] [2019-10-13 21:12:54,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:54,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:54,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:12:55,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388048639] [2019-10-13 21:12:55,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:55,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:12:55,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816260331] [2019-10-13 21:12:55,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:12:55,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:55,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:12:55,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:12:55,677 INFO L87 Difference]: Start difference. First operand 505 states. Second operand 2 states. [2019-10-13 21:12:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:55,761 INFO L93 Difference]: Finished difference Result 741 states and 976 transitions. [2019-10-13 21:12:55,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:12:55,763 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 200 [2019-10-13 21:12:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:55,789 INFO L225 Difference]: With dead ends: 741 [2019-10-13 21:12:55,789 INFO L226 Difference]: Without dead ends: 482 [2019-10-13 21:12:55,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:12:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-10-13 21:12:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2019-10-13 21:12:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-10-13 21:12:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 638 transitions. [2019-10-13 21:12:55,910 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 638 transitions. Word has length 200 [2019-10-13 21:12:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:55,912 INFO L462 AbstractCegarLoop]: Abstraction has 482 states and 638 transitions. [2019-10-13 21:12:55,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:12:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 638 transitions. [2019-10-13 21:12:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:12:55,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:55,919 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:55,919 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2011171209, now seen corresponding path program 1 times [2019-10-13 21:12:55,920 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:55,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412948936] [2019-10-13 21:12:55,920 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:55,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:55,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:12:56,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412948936] [2019-10-13 21:12:56,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:56,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:12:56,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541123676] [2019-10-13 21:12:56,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:56,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:56,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:12:56,314 INFO L87 Difference]: Start difference. First operand 482 states and 638 transitions. Second operand 3 states. [2019-10-13 21:12:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:56,420 INFO L93 Difference]: Finished difference Result 724 states and 942 transitions. [2019-10-13 21:12:56,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:56,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-13 21:12:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:56,430 INFO L225 Difference]: With dead ends: 724 [2019-10-13 21:12:56,430 INFO L226 Difference]: Without dead ends: 485 [2019-10-13 21:12:56,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:12:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-10-13 21:12:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2019-10-13 21:12:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2019-10-13 21:12:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 640 transitions. [2019-10-13 21:12:56,479 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 640 transitions. Word has length 201 [2019-10-13 21:12:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:56,481 INFO L462 AbstractCegarLoop]: Abstraction has 484 states and 640 transitions. [2019-10-13 21:12:56,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 640 transitions. [2019-10-13 21:12:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:12:56,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:56,495 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:56,495 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2082311285, now seen corresponding path program 1 times [2019-10-13 21:12:56,496 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:56,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947628182] [2019-10-13 21:12:56,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:56,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:56,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:12:56,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947628182] [2019-10-13 21:12:56,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:56,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:12:56,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361895471] [2019-10-13 21:12:56,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:56,742 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:56,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:56,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:12:56,743 INFO L87 Difference]: Start difference. First operand 484 states and 640 transitions. Second operand 3 states. [2019-10-13 21:12:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:56,789 INFO L93 Difference]: Finished difference Result 946 states and 1281 transitions. [2019-10-13 21:12:56,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:56,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2019-10-13 21:12:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:56,793 INFO L225 Difference]: With dead ends: 946 [2019-10-13 21:12:56,794 INFO L226 Difference]: Without dead ends: 527 [2019-10-13 21:12:56,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:12:56,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-13 21:12:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 526. [2019-10-13 21:12:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-13 21:12:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2019-10-13 21:12:56,819 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 213 [2019-10-13 21:12:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:56,819 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2019-10-13 21:12:56,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2019-10-13 21:12:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:12:56,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:56,825 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:56,825 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash -849255291, now seen corresponding path program 1 times [2019-10-13 21:12:56,825 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:56,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967483564] [2019-10-13 21:12:56,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:56,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:56,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:12:57,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967483564] [2019-10-13 21:12:57,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:57,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:12:57,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717005746] [2019-10-13 21:12:57,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:57,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:12:57,010 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand 3 states. [2019-10-13 21:12:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:57,051 INFO L93 Difference]: Finished difference Result 1069 states and 1492 transitions. [2019-10-13 21:12:57,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:57,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-13 21:12:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:57,061 INFO L225 Difference]: With dead ends: 1069 [2019-10-13 21:12:57,061 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:12:57,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:12:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:12:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 607. [2019-10-13 21:12:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 21:12:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 850 transitions. [2019-10-13 21:12:57,093 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 850 transitions. Word has length 214 [2019-10-13 21:12:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:57,094 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 850 transitions. [2019-10-13 21:12:57,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 850 transitions. [2019-10-13 21:12:57,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:12:57,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:57,098 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:57,098 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:57,099 INFO L82 PathProgramCache]: Analyzing trace with hash 716766844, now seen corresponding path program 1 times [2019-10-13 21:12:57,099 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:57,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353743296] [2019-10-13 21:12:57,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:57,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:57,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:12:57,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353743296] [2019-10-13 21:12:57,525 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:57,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:12:57,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215176117] [2019-10-13 21:12:57,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:12:57,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:12:57,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:12:57,527 INFO L87 Difference]: Start difference. First operand 607 states and 850 transitions. Second operand 19 states. [2019-10-13 21:13:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:01,745 INFO L93 Difference]: Finished difference Result 1925 states and 2678 transitions. [2019-10-13 21:13:01,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:01,745 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 217 [2019-10-13 21:13:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:01,766 INFO L225 Difference]: With dead ends: 1925 [2019-10-13 21:13:01,767 INFO L226 Difference]: Without dead ends: 1699 [2019-10-13 21:13:01,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2019-10-13 21:13:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1662. [2019-10-13 21:13:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2019-10-13 21:13:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2334 transitions. [2019-10-13 21:13:01,890 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2334 transitions. Word has length 217 [2019-10-13 21:13:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:01,894 INFO L462 AbstractCegarLoop]: Abstraction has 1662 states and 2334 transitions. [2019-10-13 21:13:01,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2334 transitions. [2019-10-13 21:13:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:13:01,902 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:01,902 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:01,903 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1614735209, now seen corresponding path program 1 times [2019-10-13 21:13:01,903 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:01,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267801423] [2019-10-13 21:13:01,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:01,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:01,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:02,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267801423] [2019-10-13 21:13:02,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:02,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:02,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970995648] [2019-10-13 21:13:02,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:02,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:02,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:02,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:02,277 INFO L87 Difference]: Start difference. First operand 1662 states and 2334 transitions. Second operand 15 states. [2019-10-13 21:13:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:05,155 INFO L93 Difference]: Finished difference Result 2719 states and 3748 transitions. [2019-10-13 21:13:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:05,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 218 [2019-10-13 21:13:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:05,168 INFO L225 Difference]: With dead ends: 2719 [2019-10-13 21:13:05,169 INFO L226 Difference]: Without dead ends: 1764 [2019-10-13 21:13:05,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2019-10-13 21:13:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1732. [2019-10-13 21:13:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2019-10-13 21:13:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2445 transitions. [2019-10-13 21:13:05,285 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2445 transitions. Word has length 218 [2019-10-13 21:13:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:05,285 INFO L462 AbstractCegarLoop]: Abstraction has 1732 states and 2445 transitions. [2019-10-13 21:13:05,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2445 transitions. [2019-10-13 21:13:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:13:05,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:05,294 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:05,295 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1908817952, now seen corresponding path program 1 times [2019-10-13 21:13:05,296 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:05,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843313285] [2019-10-13 21:13:05,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:05,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843313285] [2019-10-13 21:13:05,635 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:05,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:05,635 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002440196] [2019-10-13 21:13:05,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:05,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:05,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:05,638 INFO L87 Difference]: Start difference. First operand 1732 states and 2445 transitions. Second operand 15 states. [2019-10-13 21:13:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:08,671 INFO L93 Difference]: Finished difference Result 2789 states and 3855 transitions. [2019-10-13 21:13:08,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:08,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 219 [2019-10-13 21:13:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:08,683 INFO L225 Difference]: With dead ends: 2789 [2019-10-13 21:13:08,684 INFO L226 Difference]: Without dead ends: 1764 [2019-10-13 21:13:08,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2019-10-13 21:13:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1732. [2019-10-13 21:13:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2019-10-13 21:13:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2445 transitions. [2019-10-13 21:13:08,769 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2445 transitions. Word has length 219 [2019-10-13 21:13:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:08,770 INFO L462 AbstractCegarLoop]: Abstraction has 1732 states and 2445 transitions. [2019-10-13 21:13:08,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2445 transitions. [2019-10-13 21:13:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:13:08,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:08,778 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:08,779 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1755690719, now seen corresponding path program 1 times [2019-10-13 21:13:08,779 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:08,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277731486] [2019-10-13 21:13:08,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:08,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:08,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:09,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277731486] [2019-10-13 21:13:09,198 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:09,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2019-10-13 21:13:09,198 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420357802] [2019-10-13 21:13:09,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:13:09,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:13:09,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:13:09,201 INFO L87 Difference]: Start difference. First operand 1732 states and 2445 transitions. Second operand 23 states. [2019-10-13 21:13:14,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:14,006 INFO L93 Difference]: Finished difference Result 2854 states and 3959 transitions. [2019-10-13 21:13:14,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-13 21:13:14,007 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 219 [2019-10-13 21:13:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:14,019 INFO L225 Difference]: With dead ends: 2854 [2019-10-13 21:13:14,019 INFO L226 Difference]: Without dead ends: 1829 [2019-10-13 21:13:14,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=389, Invalid=4723, Unknown=0, NotChecked=0, Total=5112 [2019-10-13 21:13:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2019-10-13 21:13:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1794. [2019-10-13 21:13:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1794 states. [2019-10-13 21:13:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2537 transitions. [2019-10-13 21:13:14,092 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2537 transitions. Word has length 219 [2019-10-13 21:13:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:14,093 INFO L462 AbstractCegarLoop]: Abstraction has 1794 states and 2537 transitions. [2019-10-13 21:13:14,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:13:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2537 transitions. [2019-10-13 21:13:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:13:14,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:14,102 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:14,102 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1276793998, now seen corresponding path program 1 times [2019-10-13 21:13:14,103 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:14,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59370787] [2019-10-13 21:13:14,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:14,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:14,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:13:14,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59370787] [2019-10-13 21:13:14,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:14,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 21:13:14,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776171077] [2019-10-13 21:13:14,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:13:14,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:14,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:13:14,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:13:14,365 INFO L87 Difference]: Start difference. First operand 1794 states and 2537 transitions. Second operand 14 states. [2019-10-13 21:13:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:14,661 INFO L93 Difference]: Finished difference Result 2983 states and 4150 transitions. [2019-10-13 21:13:14,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:13:14,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2019-10-13 21:13:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:14,677 INFO L225 Difference]: With dead ends: 2983 [2019-10-13 21:13:14,677 INFO L226 Difference]: Without dead ends: 1850 [2019-10-13 21:13:14,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2019-10-13 21:13:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1819. [2019-10-13 21:13:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2019-10-13 21:13:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2563 transitions. [2019-10-13 21:13:14,792 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2563 transitions. Word has length 218 [2019-10-13 21:13:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:14,794 INFO L462 AbstractCegarLoop]: Abstraction has 1819 states and 2563 transitions. [2019-10-13 21:13:14,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:13:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2563 transitions. [2019-10-13 21:13:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:13:14,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:14,807 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:14,808 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash -214845570, now seen corresponding path program 1 times [2019-10-13 21:13:14,808 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:14,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044060994] [2019-10-13 21:13:14,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:14,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:14,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:15,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044060994] [2019-10-13 21:13:15,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:15,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:15,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561047446] [2019-10-13 21:13:15,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:15,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:15,110 INFO L87 Difference]: Start difference. First operand 1819 states and 2563 transitions. Second operand 5 states. [2019-10-13 21:13:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:16,011 INFO L93 Difference]: Finished difference Result 4240 states and 5876 transitions. [2019-10-13 21:13:16,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:16,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2019-10-13 21:13:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:16,036 INFO L225 Difference]: With dead ends: 4240 [2019-10-13 21:13:16,036 INFO L226 Difference]: Without dead ends: 3712 [2019-10-13 21:13:16,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:13:16,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2019-10-13 21:13:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3693. [2019-10-13 21:13:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3693 states. [2019-10-13 21:13:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 5159 transitions. [2019-10-13 21:13:16,221 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 5159 transitions. Word has length 218 [2019-10-13 21:13:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:16,222 INFO L462 AbstractCegarLoop]: Abstraction has 3693 states and 5159 transitions. [2019-10-13 21:13:16,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 5159 transitions. [2019-10-13 21:13:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:13:16,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:16,235 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:16,235 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:16,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1639499967, now seen corresponding path program 1 times [2019-10-13 21:13:16,236 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:16,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049697630] [2019-10-13 21:13:16,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:16,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:16,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:13:16,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049697630] [2019-10-13 21:13:16,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:16,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 21:13:16,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910183934] [2019-10-13 21:13:16,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 21:13:16,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 21:13:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:13:16,481 INFO L87 Difference]: Start difference. First operand 3693 states and 5159 transitions. Second operand 13 states. [2019-10-13 21:13:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:18,677 INFO L93 Difference]: Finished difference Result 9380 states and 12951 transitions. [2019-10-13 21:13:18,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:13:18,678 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 218 [2019-10-13 21:13:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:18,721 INFO L225 Difference]: With dead ends: 9380 [2019-10-13 21:13:18,721 INFO L226 Difference]: Without dead ends: 7337 [2019-10-13 21:13:18,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:13:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2019-10-13 21:13:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 7312. [2019-10-13 21:13:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7312 states. [2019-10-13 21:13:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 10203 transitions. [2019-10-13 21:13:19,132 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 10203 transitions. Word has length 218 [2019-10-13 21:13:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:19,132 INFO L462 AbstractCegarLoop]: Abstraction has 7312 states and 10203 transitions. [2019-10-13 21:13:19,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 21:13:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 10203 transitions. [2019-10-13 21:13:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:13:19,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:19,150 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:19,150 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:19,150 INFO L82 PathProgramCache]: Analyzing trace with hash -486187450, now seen corresponding path program 1 times [2019-10-13 21:13:19,151 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:19,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189324718] [2019-10-13 21:13:19,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:19,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:19,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:13:19,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189324718] [2019-10-13 21:13:19,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:19,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:19,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467827355] [2019-10-13 21:13:19,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:19,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:19,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:19,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:19,285 INFO L87 Difference]: Start difference. First operand 7312 states and 10203 transitions. Second operand 3 states. [2019-10-13 21:13:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:19,453 INFO L93 Difference]: Finished difference Result 15501 states and 22061 transitions. [2019-10-13 21:13:19,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:19,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-10-13 21:13:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:19,507 INFO L225 Difference]: With dead ends: 15501 [2019-10-13 21:13:19,507 INFO L226 Difference]: Without dead ends: 8254 [2019-10-13 21:13:19,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2019-10-13 21:13:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8248. [2019-10-13 21:13:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8248 states. [2019-10-13 21:13:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8248 states to 8248 states and 11901 transitions. [2019-10-13 21:13:19,907 INFO L78 Accepts]: Start accepts. Automaton has 8248 states and 11901 transitions. Word has length 216 [2019-10-13 21:13:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:19,907 INFO L462 AbstractCegarLoop]: Abstraction has 8248 states and 11901 transitions. [2019-10-13 21:13:19,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8248 states and 11901 transitions. [2019-10-13 21:13:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:13:19,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:19,934 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:19,935 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1217345233, now seen corresponding path program 1 times [2019-10-13 21:13:19,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:19,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687524165] [2019-10-13 21:13:19,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:19,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:19,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:20,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687524165] [2019-10-13 21:13:20,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:20,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:13:20,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48481320] [2019-10-13 21:13:20,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:13:20,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:13:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:13:20,237 INFO L87 Difference]: Start difference. First operand 8248 states and 11901 transitions. Second operand 11 states. [2019-10-13 21:13:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:20,543 INFO L93 Difference]: Finished difference Result 12751 states and 17851 transitions. [2019-10-13 21:13:20,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:13:20,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 219 [2019-10-13 21:13:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:20,589 INFO L225 Difference]: With dead ends: 12751 [2019-10-13 21:13:20,589 INFO L226 Difference]: Without dead ends: 8718 [2019-10-13 21:13:20,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8718 states. [2019-10-13 21:13:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8718 to 8688. [2019-10-13 21:13:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2019-10-13 21:13:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 12596 transitions. [2019-10-13 21:13:20,948 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 12596 transitions. Word has length 219 [2019-10-13 21:13:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:20,949 INFO L462 AbstractCegarLoop]: Abstraction has 8688 states and 12596 transitions. [2019-10-13 21:13:20,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:13:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 12596 transitions. [2019-10-13 21:13:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-13 21:13:20,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:20,971 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:20,971 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1862061334, now seen corresponding path program 1 times [2019-10-13 21:13:20,972 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:20,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211721086] [2019-10-13 21:13:20,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:20,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:20,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:21,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211721086] [2019-10-13 21:13:21,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:21,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:13:21,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200174177] [2019-10-13 21:13:21,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:13:21,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:21,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:13:21,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:13:21,131 INFO L87 Difference]: Start difference. First operand 8688 states and 12596 transitions. Second operand 9 states. [2019-10-13 21:13:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:21,861 INFO L93 Difference]: Finished difference Result 14213 states and 19979 transitions. [2019-10-13 21:13:21,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:13:21,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2019-10-13 21:13:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:21,893 INFO L225 Difference]: With dead ends: 14213 [2019-10-13 21:13:21,894 INFO L226 Difference]: Without dead ends: 8758 [2019-10-13 21:13:21,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:13:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8758 states. [2019-10-13 21:13:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8758 to 8728. [2019-10-13 21:13:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8728 states. [2019-10-13 21:13:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8728 states to 8728 states and 12636 transitions. [2019-10-13 21:13:22,256 INFO L78 Accepts]: Start accepts. Automaton has 8728 states and 12636 transitions. Word has length 220 [2019-10-13 21:13:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:22,257 INFO L462 AbstractCegarLoop]: Abstraction has 8728 states and 12636 transitions. [2019-10-13 21:13:22,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:13:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8728 states and 12636 transitions. [2019-10-13 21:13:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:13:22,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:22,277 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:22,278 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:22,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2088192623, now seen corresponding path program 1 times [2019-10-13 21:13:22,278 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:22,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263988845] [2019-10-13 21:13:22,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:22,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:22,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:22,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263988845] [2019-10-13 21:13:22,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:22,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:13:22,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269092200] [2019-10-13 21:13:22,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:13:22,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:22,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:13:22,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:13:22,439 INFO L87 Difference]: Start difference. First operand 8728 states and 12636 transitions. Second operand 6 states. [2019-10-13 21:13:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:23,174 INFO L93 Difference]: Finished difference Result 23190 states and 32956 transitions. [2019-10-13 21:13:23,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:13:23,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2019-10-13 21:13:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:23,242 INFO L225 Difference]: With dead ends: 23190 [2019-10-13 21:13:23,242 INFO L226 Difference]: Without dead ends: 17623 [2019-10-13 21:13:23,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:13:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17623 states. [2019-10-13 21:13:23,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17623 to 17474. [2019-10-13 21:13:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17474 states. [2019-10-13 21:13:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17474 states to 17474 states and 25343 transitions. [2019-10-13 21:13:23,975 INFO L78 Accepts]: Start accepts. Automaton has 17474 states and 25343 transitions. Word has length 219 [2019-10-13 21:13:23,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:23,975 INFO L462 AbstractCegarLoop]: Abstraction has 17474 states and 25343 transitions. [2019-10-13 21:13:23,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:13:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 17474 states and 25343 transitions. [2019-10-13 21:13:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:13:24,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:24,010 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:24,010 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:24,010 INFO L82 PathProgramCache]: Analyzing trace with hash 303229700, now seen corresponding path program 1 times [2019-10-13 21:13:24,011 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:24,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311989666] [2019-10-13 21:13:24,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:24,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:24,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:13:24,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311989666] [2019-10-13 21:13:24,176 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:24,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:13:24,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723608353] [2019-10-13 21:13:24,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:13:24,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:24,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:13:24,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:13:24,177 INFO L87 Difference]: Start difference. First operand 17474 states and 25343 transitions. Second operand 6 states.