
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given that the line $l$ passing through the point $M(\frac{p}{2},0)$ intersects with the parabola $y^{2}=2px (p > 0)$ at points $A$ and $B$, $O$ is the coordinate origin, and $\overrightarrow{OA} \cdot \overrightarrow{OB}=-3$, find the value of $|AB|$ when $|AM|+4|BM|$ is minimum.

Present the answer in LaTex format: \boxed{Your answer}
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