Automatic bin getting created more than 2 for 1 bit variable

Coverage
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1 
cp_w_trigger: coverpoint p_reg_blk.ctl.ctl_wakeup_trigger.value iff p_reg_blk.ctrl.enable.value==1;

image
ctl_wakeup_trigger is 1 bit variable

2

If this is a field of a UVM register, value is defined as a 64-bit integral variable, even if it represents a single bit. You need to select value[0] or create an explicit bins b[] = {[0:1]}