Hspice DC simulation result is unusual and error.

The input is shown below, and the output is shown in the figure.
Do you know the cause and solution?

Sandwork version is 2013.03-SP1,
Hspice version is Hspice_L-2016.06-SP2.

Thanks in advance.

******** Input ***************************
.param pvdd      = 3

ven		en		0	3

.options post scale=1 MEASDGT=5
.option node

.dc pvdd 0 3.8 0.01

.probe v(*) i(*) v(*.*) i(*.*)

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