A method is disclosed for additively manufacturing a structure. The method may include generating at least one tool path, causing the additive manufacturing machine to place material along a first portion of the at least one tool path, and monitoring placement of the material along the first portion of the at least one tool path. The method may also include adjusting a second portion of the at least one tool path based on the placement, and causing the additive manufacturing machine to place material along the second portion of the at least one tool path after the adjusting.