When a solver starts up, it displays a brief identification string such as
MINOS 5.5 or
CPLEX 12.4. Output that occurs before this string can be assumed to come from AMPL, while output after is the solver’s.
When a solver concludes its run, it returns a brief summary of the results, such as
optimal solution; objective 903202.0326 399 iterations (244 in phase I)
Output prior to this summary can be assumed to be caused by the solver, while output after is from AMPL again.
Posted in: Errors and Messages