current bounds on the number of colors: 0 -- 108 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:26:26 2012 Optimize a model with 16254 rows, 6131 columns and 54270 nonzeros Presolve time: 0.12s Presolved: 16254 rows, 6131 columns, 54270 nonzeros Variable types: 0 continuous, 6131 integer (6131 binary) Root relaxation: objective 0.000000e+00, 282 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (475 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 54 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:26:26 2012 Optimize a model with 8181 rows, 3215 columns and 27135 nonzeros Presolve time: 0.04s Presolved: 8181 rows, 3215 columns, 27135 nonzeros Variable types: 0 continuous, 3215 integer (3215 binary) Root relaxation: objective 0.000000e+00, 244 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (418 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 27 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:26:26 2012 Optimize a model with 3995 rows, 1703 columns and 13065 nonzeros Presolve time: 0.01s Presolved: 3995 rows, 1703 columns, 13065 nonzeros Variable types: 0 continuous, 1703 integer (1703 binary) Root relaxation: objective 0.000000e+00, 231 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (400 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 13 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:26:26 2012 Optimize a model with 1902 rows, 947 columns and 6030 nonzeros Presolve time: 0.01s Presolved: 1902 rows, 947 columns, 6030 nonzeros Variable types: 0 continuous, 947 integer (947 binary) Root relaxation: objective 0.000000e+00, 243 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (413 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:26:26 2012 Optimize a model with 1005 rows, 623 columns and 3015 nonzeros Presolve time: 0.00s Presolved: 1005 rows, 623 columns, 3015 nonzeros Variable types: 0 continuous, 623 integer (623 binary) Root relaxation: objective 0.000000e+00, 255 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1991 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:26:27 2012 Optimize a model with 1304 rows, 731 columns and 4020 nonzeros Presolve time: 0.00s Presolved: 1304 rows, 731 columns, 4020 nonzeros Variable types: 0 continuous, 731 integer (731 binary) Root relaxation: objective 0.000000e+00, 258 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 6 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1018 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 4