Verilog Translator

Exception in thread "main" java.lang.AbstractMethodError: ru.ispras.verilog.parser.calculator.StandardIntegerOperations$12.validTypes([Lru/ispras/fortress/data/Data;)Z
at ru.ispras.fortress.calculator.OperationGroup.isSupported(OperationGroup.java:109)
at ru.ispras.fortress.transformer.OperationReducer.isSupported(OperationReducer.java:148)
at ru.ispras.fortress.transformer.OperationReducer.calculate(OperationReducer.java:195)
at ru.ispras.fortress.transformer.OperationReducer.reduce(OperationReducer.java:76)
at ru.ispras.fortress.transformer.Transformer.reduce(Transformer.java:73)
at ru.ispras.fortress.transformer.OperationReducer.analyzeOperands(OperationReducer.java:112)
at ru.ispras.fortress.transformer.OperationReducer.<init>(OperationReducer.java:65)
at ru.ispras.fortress.transformer.Transformer.reduce(Transformer.java:70)
at ru.ispras.verilog.parser.model.basis.Expression.reduce(Unknown Source)
at ru.ispras.verilog.parser.model.basis.Expression.reduce(Unknown Source)
at ru.ispras.verilog.parser.processor.VerilogGenerateProcessor.reduce(Unknown Source)
at ru.ispras.verilog.parser.processor.VerilogGenerateProcessor.reduce(Unknown Source)
at ru.ispras.verilog.parser.processor.VerilogGenerateProcessor.reduce(Unknown Source)
at ru.ispras.verilog.parser.processor.VerilogGenerateProcessor.onDeclarationBegin(Unknown Source)
at ru.ispras.verilog.parser.walker.VerilogNodeVisitor$13.onBegin(Unknown Source)
at ru.ispras.verilog.parser.walker.VerilogNodeVisitor.onBegin(Unknown Source)
at ru.ispras.verilog.parser.core.TreeWalker.onBegin(Unknown Source)
at ru.ispras.verilog.parser.core.TreeWalker.start(Unknown Source)
at ru.ispras.verilog.parser.VerilogBackend.start(Unknown Source)
at ru.ispras.verilog.parser.VerilogBackends.start(Unknown Source)
at ru.ispras.verilog.parser.VerilogTranslator.start(Unknown Source)