current bounds on the number of colors: 0 -- 35 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:32 2012 Optimize a model with 630 rows, 630 columns and 2380 nonzeros Presolve removed 4 rows and 68 columns Presolve time: 0.00s Presolved: 626 rows, 562 columns, 2312 nonzeros Variable types: 0 continuous, 562 integer (562 binary) Root relaxation: objective 0.000000e+00, 54 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 (54 simplex iterations) in 0.00 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:32 2012 Optimize a model with 315 rows, 315 columns and 1120 nonzeros Presolve removed 4 rows and 32 columns Presolve time: 0.00s Presolved: 311 rows, 283 columns, 1088 nonzeros Variable types: 0 continuous, 283 integer (283 binary) Root relaxation: objective 0.000000e+00, 56 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 (56 simplex iterations) in 0.00 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:32 2012 Optimize a model with 175 rows, 175 columns and 560 nonzeros Presolve removed 4 rows and 16 columns Presolve time: 0.00s Presolved: 171 rows, 159 columns, 544 nonzeros Variable types: 0 continuous, 159 integer (159 binary) Root relaxation: objective 0.000000e+00, 56 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 (56 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:32 2012 Optimize a model with 105 rows, 105 columns and 280 nonzeros Presolve removed 35 rows and 39 columns Presolve time: 0.00s Presolved: 70 rows, 66 columns, 210 nonzeros Variable types: 0 continuous, 66 integer (66 binary) Root relaxation: objective 0.000000e+00, 34 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 31 - 0.00000 - - 0s Explored 0 nodes (82 simplex iterations) in 0.00 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: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:32 2012 Optimize a model with 140 rows, 140 columns and 420 nonzeros Presolve removed 4 rows and 12 columns Presolve time: 0.00s Presolved: 136 rows, 128 columns, 408 nonzeros Variable types: 0 continuous, 128 integer (128 binary) Root relaxation: objective 0.000000e+00, 54 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 (54 simplex iterations) in 0.00 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: 3