A Judaeo-Christian god is omniscient and omnipotent, which is at best a negative proof fallacy.

Non-variables:

1. God is all knowing
2. God is all powerful
3. Time is linear O(n), therefore, only one outcome is possible and cannot be contradicted. (i.e. mutliple outcomes are only possible in multiple time frames. In this scenario, there is only one frame, as there is only one proven time frame, all other evidence is theoretical.)

For once, even the collective in question agrees:

"the Judaeo-Christian concept, based on the Bible, states that time is linear, with a beginning, the act of creation by God." -Wikipedia

The Paradox:
If God forsees that he will create a stone (omniscience), then can he later decide that he will not create the stone (omnipotence)?

-if he does not create the stone, his foresight is counterfactual and his omniscience is invalidated
-if he cannot cannot create the stone because it is now predestined, his omnipotence is invalidated

Conclusion:

A dually omnipotent and omniscient being is logically impossible.


Even omnipotence alone is flawed. Can an all powerful god create a stone too heavy for him to lift? He either

-cannot create it
or
-cannot lift it
 

Either way, omnipotence becomes invalidated.

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There is room for surpressed correlative counter arguments, but ultimately, God is logically impossible. 

Even so, we still don't really know either way.