Contains information returned by a solver on a specific problem instance. Includes the following elements:

instance.name

Name of the instance solved.

solver

Solver name used to solve the instance.

solver.id

Solver ID. Basically the solver name with parameter values appended.

tour.length

Tour length

tour

Permutation of the nodes.

runtime

Running time measured via proc.time

error

Error message, which occured during optimization.