Problem with sub-optimal solution

[jacopodabramo]

Hi everyone,
To solve my models in PuLP I am using PULP_CBC_CMD solver but I am facing a problem: when the solution is not optimal but sub-optimal the status of the model, namely model.status = 1, which means that is optimal. I need to distinguish between the cases when it stops with optimal solution and when it stop returning a suboptimal solution. I attach the logs of my running, as it is possible to see it stops on time limit with objective value 653 which is not my optimal solution and by the way the model.status has value 1.
stat.txt

[jacopodabramo]

Solved with model.sol_status variable.
1 = optimal
2 = sub-optimal
0 = no solution found in time give
-1 = unsat