Status values

These are the exit statuses, their respective constants and values returned by the solver as defined in constants.h. The inaccurate statuses define when the optimality, primal infeasibility or dual infeasibility conditions are satisfied with tolerances 10 times larger than the ones set.

Status

Constant

Value

solved

OSQP_SOLVED

1

solved inaccurate

OSQP_SOLVED_INACCURATE

2

maximum iterations reached

OSQP_MAX_ITER_REACHED

-2

primal infeasible

OSQP_PRIMAL_INFEASIBLE

-3

primal infeasible inaccurate

OSQP_PRIMAL_INFEASIBLE_INACCURATE

3

dual infeasible

OSQP_DUAL_INFEASIBLE

-4

dual infeasible inaccurate

OSQP_DUAL_INFEASIBLE_INACCURATE

4

interrupted by user

OSQP_SIGINT

-5

run time limit reached

OSQP_TIME_LIMIT_REACHED

-6

unsolved

OSQP_UNSOLVED

-10

problem non convex

OSQP_NON_CVX

-7

Note

We recommend the user to check the convexity of their problem before passing it to OSQP! If the user passes a non-convex problem we do not assure the solver will be able to detect it.

OSQP will try to detect non-convex problems by checking if the residuals diverge or if there are any issues in the initial factorization (if a direct method is used). It will detect non-convex problems when one or more of the eigenvalues of P are “clearly” negative, i.e., when P + sigma * I is not positive semidefinite. However, it might fail to detect non-convexity when P has slightly negative eigenvalues, i.e., when P + sigma * I is positive semidefinite and P is not.