expect_infeasible_problem_ctol:

Threshold for disabling "expect_infeasible_problem" option. $\;$
If the constraint violation becomes smaller than this threshold, the "expect_infeasible_problem" heuristics in the filter line search are disabled. If the problem is square, this options is set to 0. The valid range for this real option is $0 \le {\tt expect\_infeasible\_problem\_ctol } < {\tt +inf}$ and its default value is $0.001$.