If you claim that free will without evil is logically(or in any way) impossible then a simultaneously omniscient, omnipotent, and omnibenevolent God cannot create a universe with free-will and without evil.
An omnibenevolent God, by definition, embodies perfect goodness and would therefore have the desire to eliminate or prevent all forms of suffering and evil. The existence of free will introduces the potential for individuals to make choices that could result in harm or suffering to themselves or others. If a perfectly good deity valued the prevention of suffering above all else, they would not create a system where such negative outcomes are possible.

If God is not bound by human standards of goodness, then describing God as omnibenevolent becomes meaningless to us, as it relies on a definition of "goodness" that we cannot comprehend or relate to. He could torture all of intelligent being because it's good by his standarts but from our perspective, this would not align with our understanding of goodness. Thus, attributing omnibenevolence to God without a shared standard of goodness renders the term incomprehensible and contradictory.