
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 function $f(x)$ ($x>0$) is a decreasing function, and the positive real numbers $a$, $b$, $c$ satisfy $a<b<c$, $f(a)f(b)f(c)<0$. If the real number $d$ is a solution to the equation $f(x)=0$, then among the following four judgments: ①$d<a$, ②$d<b$, ③$d<c$, ④$d>c$, which one is definitely incorrect? (Write down the serial number of all incorrect judgments.)

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