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SOL format
A Gurobi solution (SOL) file is used to output a solution vector. It can be written (using GRBwrite, for example) whenever a solution is available.
The file consists of variable-value pairs, each on its own line. The file contains one line for each variable in the model. The following is a simple example:
# Solution file x 1.0 y 0.5 z 0.2
