  We conduct the first microlensing simulation in the context of planet
formation model. The planet population is taken from the Ida & Lin core
accretion model for $0.3M_\odot$ stars. With $6690$ microlensing events, we
find for a simplified Korea Microlensing Telescopes Network (KMTNet) the
fraction of planetary events is $2.9\%$ , out of which $5.5\%$ show
multiple-planet signatures. The number of super-Earths, super-Neptunes and
super-Jupiters detected are expected to be almost equal. Our simulation shows
that high-magnification events and massive planets are favored by planet
detections, which is consistent with previous expectation. However, we notice
that extremely high-magnification events are less sensitive to planets, which
is possibly because the 10 min sampling of KMTNet is not intensive enough to
capture the subtle anomalies that occur near the peak. This suggests that while
KMTNet observations can be systematically analyzed without reference to any
follow-up data, follow-up observations will be essential in extracting the full
science potential of very high-magnification events. The uniformly high-cadence
observations expected for KMTNet also result in $\sim 55\%$ of all detected
planets being non-caustic-crossing, and more low-mass planets even down to
Mars-mass being detected via planetary caustics. We also find that the
distributions of orbital inclinations and planet mass ratios in multiple-planet
events agree with the intrinsic distributions.
