div=new DecisionDoubleVisitor();
div.visitBegin();
adapter.loadLocal(step);
div.visitNEQ();
adapter.push(0D);
div.visitEnd(bc);
Label ifEnd=new Label();
adapter.ifZCmp(Opcodes.IFEQ, ifEnd);
// VariableReference index>=VariableInterpreter.getVariableReference(pc,@index));
int index = adapter.newLocal(Types.VARIABLE_REFERENCE);