CBC and CPLEX mismatch in optimal results

[vignesh1987]

Hi,

I have a query on differences between solver outputs from Cplex and CBC. My data file that i want to optimize, while solved with CPLEX, gives an optimal solution without any errors (attached figure). However, while solved with CBC, it throws an infeasibility error: “Presolve determined that the problem was infeasible with a tolerance of 1e-08. Analysis indicates model infeasible or unbounded”. What is strange is that in both CPLEX and CBC, the objective value is the same (4.3047397357e+11). What could be the reasons for this behaviour? Is there an infeasibility tolerance limit for CBC that is strict by default? If yes, How can one change it? ( I run CBC thorugh command prompt in the traditional way).

CPLEX output

CBC ouput

Best
Vignesh