/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:51:41,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:51:41,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:51:41,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:51:41,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:51:41,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:51:41,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:51:41,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:51:41,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:51:41,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:51:41,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:51:41,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:51:41,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:51:41,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:51:41,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:51:41,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:51:41,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:51:41,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:51:41,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:51:41,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:51:41,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:51:41,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:51:41,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:51:41,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:51:41,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:51:41,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:51:41,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:51:41,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:51:41,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:51:41,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:51:41,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:51:41,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:51:41,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:51:41,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:51:41,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:51:41,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:51:41,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:51:41,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:51:41,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:51:41,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:51:41,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:51:41,226 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 [2019-11-07 00:51:41,246 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:51:41,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:51:41,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:51:41,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:51:41,248 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:51:41,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:51:41,249 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:51:41,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:51:41,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:51:41,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:51:41,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:51:41,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:51:41,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:51:41,251 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:51:41,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:51:41,252 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:51:41,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:51:41,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:51:41,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:51:41,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:51:41,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:51:41,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:41,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:51:41,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:51:41,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:51:41,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:51:41,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:51:41,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:51:41,255 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 [2019-11-07 00:51:41,565 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:51:41,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:51:41,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:51:41,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:51:41,595 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:51:41,596 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product13.cil.c [2019-11-07 00:51:41,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836b22ebe/8836021700c246d5b509532492167d70/FLAGaffe87231 [2019-11-07 00:51:42,309 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:51:42,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product13.cil.c [2019-11-07 00:51:42,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836b22ebe/8836021700c246d5b509532492167d70/FLAGaffe87231 [2019-11-07 00:51:42,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836b22ebe/8836021700c246d5b509532492167d70 [2019-11-07 00:51:42,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:51:42,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:51:42,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:42,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:51:42,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:51:42,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:42" (1/1) ... [2019-11-07 00:51:42,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16eebeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:42, skipping insertion in model container [2019-11-07 00:51:42,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:42" (1/1) ... [2019-11-07 00:51:42,515 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:51:42,595 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:43,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:43,366 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:43,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:43,615 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:43,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43 WrapperNode [2019-11-07 00:51:43,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:43,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:43,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:43,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:43,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (1/1) ... [2019-11-07 00:51:43,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:43,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:43,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:43,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:43,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (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 [2019-11-07 00:51:43,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:43,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:51:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:51:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:51:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:51:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:51:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:46,113 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:46,113 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:46,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:46 BoogieIcfgContainer [2019-11-07 00:51:46,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:46,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:46,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:46,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:46,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:42" (1/3) ... [2019-11-07 00:51:46,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13797f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:46, skipping insertion in model container [2019-11-07 00:51:46,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:43" (2/3) ... [2019-11-07 00:51:46,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13797f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:46, skipping insertion in model container [2019-11-07 00:51:46,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:46" (3/3) ... [2019-11-07 00:51:46,123 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product13.cil.c [2019-11-07 00:51:46,133 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:46,143 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:46,156 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:46,185 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:46,185 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:46,185 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:46,185 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:46,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:46,186 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:46,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:46,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states. [2019-11-07 00:51:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 00:51:46,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:46,234 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:46,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:46,242 INFO L82 PathProgramCache]: Analyzing trace with hash -319338325, now seen corresponding path program 1 times [2019-11-07 00:51:46,252 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:46,252 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955962255] [2019-11-07 00:51:46,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:51:46,910 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955962255] [2019-11-07 00:51:46,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:46,911 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:46,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991605440] [2019-11-07 00:51:46,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:46,922 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:46,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:46,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:46,940 INFO L87 Difference]: Start difference. First operand 447 states. Second operand 2 states. [2019-11-07 00:51:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:47,040 INFO L93 Difference]: Finished difference Result 603 states and 795 transitions. [2019-11-07 00:51:47,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:47,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-11-07 00:51:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:47,077 INFO L225 Difference]: With dead ends: 603 [2019-11-07 00:51:47,078 INFO L226 Difference]: Without dead ends: 402 [2019-11-07 00:51:47,083 INFO L630 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 [2019-11-07 00:51:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2019-11-07 00:51:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2019-11-07 00:51:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2019-11-07 00:51:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 535 transitions. [2019-11-07 00:51:47,177 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 535 transitions. Word has length 148 [2019-11-07 00:51:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:47,181 INFO L462 AbstractCegarLoop]: Abstraction has 402 states and 535 transitions. [2019-11-07 00:51:47,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 535 transitions. [2019-11-07 00:51:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:51:47,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:47,187 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:47,188 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2037182428, now seen corresponding path program 1 times [2019-11-07 00:51:47,188 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:47,189 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057631496] [2019-11-07 00:51:47,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:51:47,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057631496] [2019-11-07 00:51:47,422 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:47,422 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:47,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328043538] [2019-11-07 00:51:47,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:47,425 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:47,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:47,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:47,426 INFO L87 Difference]: Start difference. First operand 402 states and 535 transitions. Second operand 3 states. [2019-11-07 00:51:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:47,462 INFO L93 Difference]: Finished difference Result 586 states and 764 transitions. [2019-11-07 00:51:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:47,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 00:51:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:47,467 INFO L225 Difference]: With dead ends: 586 [2019-11-07 00:51:47,467 INFO L226 Difference]: Without dead ends: 405 [2019-11-07 00:51:47,469 INFO L630 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 [2019-11-07 00:51:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2019-11-07 00:51:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 404. [2019-11-07 00:51:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2019-11-07 00:51:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 537 transitions. [2019-11-07 00:51:47,515 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 537 transitions. Word has length 149 [2019-11-07 00:51:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:47,518 INFO L462 AbstractCegarLoop]: Abstraction has 404 states and 537 transitions. [2019-11-07 00:51:47,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 537 transitions. [2019-11-07 00:51:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:51:47,523 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:47,523 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:47,523 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:47,524 INFO L82 PathProgramCache]: Analyzing trace with hash 33956208, now seen corresponding path program 1 times [2019-11-07 00:51:47,524 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:47,524 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28291296] [2019-11-07 00:51:47,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:51:47,756 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28291296] [2019-11-07 00:51:47,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:47,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:47,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312655299] [2019-11-07 00:51:47,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:47,762 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:47,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:47,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:47,762 INFO L87 Difference]: Start difference. First operand 404 states and 537 transitions. Second operand 3 states. [2019-11-07 00:51:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:47,796 INFO L93 Difference]: Finished difference Result 782 states and 1069 transitions. [2019-11-07 00:51:47,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:47,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:51:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:47,801 INFO L225 Difference]: With dead ends: 782 [2019-11-07 00:51:47,801 INFO L226 Difference]: Without dead ends: 443 [2019-11-07 00:51:47,803 INFO L630 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 [2019-11-07 00:51:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-11-07 00:51:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 442. [2019-11-07 00:51:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-11-07 00:51:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 603 transitions. [2019-11-07 00:51:47,826 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 603 transitions. Word has length 155 [2019-11-07 00:51:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:47,826 INFO L462 AbstractCegarLoop]: Abstraction has 442 states and 603 transitions. [2019-11-07 00:51:47,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 603 transitions. [2019-11-07 00:51:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 00:51:47,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:47,829 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:47,830 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:47,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1421123809, now seen corresponding path program 1 times [2019-11-07 00:51:47,830 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:47,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568063414] [2019-11-07 00:51:47,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:51:48,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568063414] [2019-11-07 00:51:48,011 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:48,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:51:48,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666363024] [2019-11-07 00:51:48,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:48,012 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:48,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:48,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:51:48,013 INFO L87 Difference]: Start difference. First operand 442 states and 603 transitions. Second operand 7 states. [2019-11-07 00:51:50,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:50,744 INFO L93 Difference]: Finished difference Result 786 states and 1038 transitions. [2019-11-07 00:51:50,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:51:50,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-11-07 00:51:50,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:50,750 INFO L225 Difference]: With dead ends: 786 [2019-11-07 00:51:50,750 INFO L226 Difference]: Without dead ends: 621 [2019-11-07 00:51:50,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:51:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-11-07 00:51:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 612. [2019-11-07 00:51:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-11-07 00:51:50,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 819 transitions. [2019-11-07 00:51:50,796 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 819 transitions. Word has length 156 [2019-11-07 00:51:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:50,797 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 819 transitions. [2019-11-07 00:51:50,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 819 transitions. [2019-11-07 00:51:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 00:51:50,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:50,805 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:50,805 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:50,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1352001188, now seen corresponding path program 1 times [2019-11-07 00:51:50,806 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:50,806 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583349603] [2019-11-07 00:51:50,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:51:51,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583349603] [2019-11-07 00:51:51,173 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:51,173 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 00:51:51,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184814515] [2019-11-07 00:51:51,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:51:51,174 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:51,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:51:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:51:51,175 INFO L87 Difference]: Start difference. First operand 612 states and 819 transitions. Second operand 16 states. [2019-11-07 00:51:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:51,655 INFO L93 Difference]: Finished difference Result 1003 states and 1321 transitions. [2019-11-07 00:51:51,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:51:51,656 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-11-07 00:51:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:51,661 INFO L225 Difference]: With dead ends: 1003 [2019-11-07 00:51:51,661 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 00:51:51,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:51:51,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 00:51:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 640. [2019-11-07 00:51:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-11-07 00:51:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 854 transitions. [2019-11-07 00:51:51,703 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 854 transitions. Word has length 157 [2019-11-07 00:51:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:51,704 INFO L462 AbstractCegarLoop]: Abstraction has 640 states and 854 transitions. [2019-11-07 00:51:51,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:51:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 854 transitions. [2019-11-07 00:51:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:51:51,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:51,708 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:51,708 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:51,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1213322281, now seen corresponding path program 1 times [2019-11-07 00:51:51,709 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:51,709 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271803874] [2019-11-07 00:51:51,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:51:51,907 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271803874] [2019-11-07 00:51:51,907 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:51,907 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:51:51,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863740741] [2019-11-07 00:51:51,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:51:51,908 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:51:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:51:51,908 INFO L87 Difference]: Start difference. First operand 640 states and 854 transitions. Second operand 8 states. [2019-11-07 00:51:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:52,550 INFO L93 Difference]: Finished difference Result 1123 states and 1472 transitions. [2019-11-07 00:51:52,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:52,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2019-11-07 00:51:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:52,558 INFO L225 Difference]: With dead ends: 1123 [2019-11-07 00:51:52,558 INFO L226 Difference]: Without dead ends: 1036 [2019-11-07 00:51:52,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:51:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-11-07 00:51:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1023. [2019-11-07 00:51:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2019-11-07 00:51:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1350 transitions. [2019-11-07 00:51:52,612 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1350 transitions. Word has length 166 [2019-11-07 00:51:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:52,613 INFO L462 AbstractCegarLoop]: Abstraction has 1023 states and 1350 transitions. [2019-11-07 00:51:52,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:51:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1350 transitions. [2019-11-07 00:51:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:51:52,616 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:52,616 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:52,617 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:52,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1191367596, now seen corresponding path program 1 times [2019-11-07 00:51:52,617 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:52,618 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54702307] [2019-11-07 00:51:52,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:52,911 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54702307] [2019-11-07 00:51:52,911 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:52,911 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:51:52,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270786400] [2019-11-07 00:51:52,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:51:52,912 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:52,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:51:52,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:51:52,913 INFO L87 Difference]: Start difference. First operand 1023 states and 1350 transitions. Second operand 15 states. [2019-11-07 00:51:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:53,420 INFO L93 Difference]: Finished difference Result 1376 states and 1795 transitions. [2019-11-07 00:51:53,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 00:51:53,421 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2019-11-07 00:51:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:53,428 INFO L225 Difference]: With dead ends: 1376 [2019-11-07 00:51:53,428 INFO L226 Difference]: Without dead ends: 1022 [2019-11-07 00:51:53,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:51:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2019-11-07 00:51:53,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1021. [2019-11-07 00:51:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-11-07 00:51:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1345 transitions. [2019-11-07 00:51:53,488 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1345 transitions. Word has length 167 [2019-11-07 00:51:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:53,489 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1345 transitions. [2019-11-07 00:51:53,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:51:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1345 transitions. [2019-11-07 00:51:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:51:53,492 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:53,492 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:53,493 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:53,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:53,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1987588104, now seen corresponding path program 2 times [2019-11-07 00:51:53,497 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:53,497 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526331504] [2019-11-07 00:51:53,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:53,748 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526331504] [2019-11-07 00:51:53,749 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407012569] [2019-11-07 00:51:53,749 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:54,264 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:51:54,264 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:51:54,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:51:54,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:51:54,484 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:51:55,183 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:55,183 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:51:55,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762327998] [2019-11-07 00:51:55,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:51:55,185 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:55,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:51:55,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:51:55,186 INFO L87 Difference]: Start difference. First operand 1021 states and 1345 transitions. Second operand 14 states. [2019-11-07 00:51:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:56,846 INFO L93 Difference]: Finished difference Result 3015 states and 4010 transitions. [2019-11-07 00:51:56,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:51:56,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2019-11-07 00:51:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:56,865 INFO L225 Difference]: With dead ends: 3015 [2019-11-07 00:51:56,865 INFO L226 Difference]: Without dead ends: 3008 [2019-11-07 00:51:56,868 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:51:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2019-11-07 00:51:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2234. [2019-11-07 00:51:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2019-11-07 00:51:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3021 transitions. [2019-11-07 00:51:57,035 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3021 transitions. Word has length 167 [2019-11-07 00:51:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:57,036 INFO L462 AbstractCegarLoop]: Abstraction has 2234 states and 3021 transitions. [2019-11-07 00:51:57,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:51:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3021 transitions. [2019-11-07 00:51:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-07 00:51:57,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:57,043 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:57,258 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:57,258 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1255566063, now seen corresponding path program 1 times [2019-11-07 00:51:57,259 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:57,259 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746879393] [2019-11-07 00:51:57,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:51:57,495 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746879393] [2019-11-07 00:51:57,496 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499848419] [2019-11-07 00:51:57,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:58,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 2290 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:58,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:58,299 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:58,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:58,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:51:58,668 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:58,668 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:51:58,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352642097] [2019-11-07 00:51:58,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:58,669 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:58,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:58,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:51:58,670 INFO L87 Difference]: Start difference. First operand 2234 states and 3021 transitions. Second operand 7 states. [2019-11-07 00:51:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:59,882 INFO L93 Difference]: Finished difference Result 4441 states and 6013 transitions. [2019-11-07 00:51:59,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:59,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-11-07 00:51:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:59,896 INFO L225 Difference]: With dead ends: 4441 [2019-11-07 00:51:59,897 INFO L226 Difference]: Without dead ends: 2246 [2019-11-07 00:51:59,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:51:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2019-11-07 00:52:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2236. [2019-11-07 00:52:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2019-11-07 00:52:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3024 transitions. [2019-11-07 00:52:00,012 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3024 transitions. Word has length 170 [2019-11-07 00:52:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:00,013 INFO L462 AbstractCegarLoop]: Abstraction has 2236 states and 3024 transitions. [2019-11-07 00:52:00,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3024 transitions. [2019-11-07 00:52:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:52:00,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:00,020 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:00,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:00,228 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash -617847229, now seen corresponding path program 1 times [2019-11-07 00:52:00,229 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:00,229 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170509861] [2019-11-07 00:52:00,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:00,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170509861] [2019-11-07 00:52:00,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451876349] [2019-11-07 00:52:00,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:01,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:01,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:52:01,237 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:01,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:01,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:01,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:01,894 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:01,894 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:52:01,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100850450] [2019-11-07 00:52:01,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:01,895 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:01,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:01,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:01,896 INFO L87 Difference]: Start difference. First operand 2236 states and 3024 transitions. Second operand 9 states. [2019-11-07 00:52:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:02,993 INFO L93 Difference]: Finished difference Result 4448 states and 6023 transitions. [2019-11-07 00:52:02,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:02,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2019-11-07 00:52:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:03,005 INFO L225 Difference]: With dead ends: 4448 [2019-11-07 00:52:03,006 INFO L226 Difference]: Without dead ends: 2254 [2019-11-07 00:52:03,013 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2019-11-07 00:52:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2019-11-07 00:52:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2019-11-07 00:52:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3040 transitions. [2019-11-07 00:52:03,118 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3040 transitions. Word has length 171 [2019-11-07 00:52:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:03,119 INFO L462 AbstractCegarLoop]: Abstraction has 2252 states and 3040 transitions. [2019-11-07 00:52:03,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3040 transitions. [2019-11-07 00:52:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-07 00:52:03,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:03,126 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:03,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:03,333 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:03,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1713530598, now seen corresponding path program 1 times [2019-11-07 00:52:03,334 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:03,335 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612485748] [2019-11-07 00:52:03,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:03,457 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612485748] [2019-11-07 00:52:03,457 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774259441] [2019-11-07 00:52:03,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:04,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:04,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:04,328 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:04,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:04,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:04,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:04,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:04,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:52:04,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679845371] [2019-11-07 00:52:04,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:04,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:52:04,916 INFO L87 Difference]: Start difference. First operand 2252 states and 3040 transitions. Second operand 16 states. [2019-11-07 00:52:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:06,411 INFO L93 Difference]: Finished difference Result 4440 states and 6004 transitions. [2019-11-07 00:52:06,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:06,412 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-11-07 00:52:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:06,426 INFO L225 Difference]: With dead ends: 4440 [2019-11-07 00:52:06,426 INFO L226 Difference]: Without dead ends: 2276 [2019-11-07 00:52:06,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2019-11-07 00:52:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2274. [2019-11-07 00:52:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2274 states. [2019-11-07 00:52:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3065 transitions. [2019-11-07 00:52:06,631 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3065 transitions. Word has length 172 [2019-11-07 00:52:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:06,633 INFO L462 AbstractCegarLoop]: Abstraction has 2274 states and 3065 transitions. [2019-11-07 00:52:06,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3065 transitions. [2019-11-07 00:52:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:06,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:06,643 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:52:06,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:06,849 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:06,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1921080529, now seen corresponding path program 2 times [2019-11-07 00:52:06,850 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:06,850 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138593048] [2019-11-07 00:52:06,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:06,961 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138593048] [2019-11-07 00:52:06,961 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064096486] [2019-11-07 00:52:06,961 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:07,591 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:52:07,591 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:07,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:07,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:07,696 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:07,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:07,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:08,047 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:08,047 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 00:52:08,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205757729] [2019-11-07 00:52:08,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:52:08,049 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:52:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:08,049 INFO L87 Difference]: Start difference. First operand 2274 states and 3065 transitions. Second operand 11 states. [2019-11-07 00:52:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:09,299 INFO L93 Difference]: Finished difference Result 4225 states and 5663 transitions. [2019-11-07 00:52:09,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:09,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2019-11-07 00:52:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:09,310 INFO L225 Difference]: With dead ends: 4225 [2019-11-07 00:52:09,310 INFO L226 Difference]: Without dead ends: 2075 [2019-11-07 00:52:09,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 336 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:52:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2019-11-07 00:52:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2067. [2019-11-07 00:52:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2019-11-07 00:52:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2734 transitions. [2019-11-07 00:52:09,412 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2734 transitions. Word has length 173 [2019-11-07 00:52:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:09,413 INFO L462 AbstractCegarLoop]: Abstraction has 2067 states and 2734 transitions. [2019-11-07 00:52:09,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:52:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2734 transitions. [2019-11-07 00:52:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:52:09,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:09,418 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:52:09,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:09,626 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash 610354791, now seen corresponding path program 1 times [2019-11-07 00:52:09,626 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:09,626 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378347874] [2019-11-07 00:52:09,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:09,741 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378347874] [2019-11-07 00:52:09,742 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444018231] [2019-11-07 00:52:09,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:10,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:10,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:10,425 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:10,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:10,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:10,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:10,980 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:10,981 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 20 [2019-11-07 00:52:10,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986052505] [2019-11-07 00:52:10,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:52:10,982 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:10,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:52:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:10,983 INFO L87 Difference]: Start difference. First operand 2067 states and 2734 transitions. Second operand 15 states. [2019-11-07 00:52:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:12,578 INFO L93 Difference]: Finished difference Result 4026 states and 5340 transitions. [2019-11-07 00:52:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:12,579 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2019-11-07 00:52:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:12,588 INFO L225 Difference]: With dead ends: 4026 [2019-11-07 00:52:12,589 INFO L226 Difference]: Without dead ends: 2073 [2019-11-07 00:52:12,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 332 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:52:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2019-11-07 00:52:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2067. [2019-11-07 00:52:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2019-11-07 00:52:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2732 transitions. [2019-11-07 00:52:12,689 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2732 transitions. Word has length 174 [2019-11-07 00:52:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:12,690 INFO L462 AbstractCegarLoop]: Abstraction has 2067 states and 2732 transitions. [2019-11-07 00:52:12,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:52:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2732 transitions. [2019-11-07 00:52:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:52:12,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:12,695 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:12,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:12,911 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash -980529599, now seen corresponding path program 1 times [2019-11-07 00:52:12,911 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:12,911 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962188022] [2019-11-07 00:52:12,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:13,036 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962188022] [2019-11-07 00:52:13,037 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445748350] [2019-11-07 00:52:13,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:13,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 2292 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:52:13,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:52:13,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:52:13,804 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1996034682] [2019-11-07 00:52:13,811 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 176 [2019-11-07 00:52:13,883 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:52:13,883 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:52:14,028 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:52:14,030 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 194 root evaluator evaluations with a maximum evaluation depth of 0. Performed 194 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 360 variables. [2019-11-07 00:52:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:14,035 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:52:14,127 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-11-07 00:52:14,127 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:52:14,131 INFO L553 sIntCurrentIteration]: We unified 174 AI predicates to 174 [2019-11-07 00:52:14,131 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:52:14,132 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:52:14,132 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 4, 4] total 11 [2019-11-07 00:52:14,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452175694] [2019-11-07 00:52:14,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:14,134 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:14,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:52:14,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:52:14,134 INFO L87 Difference]: Start difference. First operand 2067 states and 2732 transitions. Second operand 2 states. [2019-11-07 00:52:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:14,150 INFO L93 Difference]: Finished difference Result 2067 states and 2732 transitions. [2019-11-07 00:52:14,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:14,150 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 175 [2019-11-07 00:52:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:14,151 INFO L225 Difference]: With dead ends: 2067 [2019-11-07 00:52:14,151 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:52:14,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:52:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:52:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:52:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:52:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:52:14,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2019-11-07 00:52:14,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:14,160 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:52:14,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:52:14,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:52:14,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:14,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.