current bounds on the number of colors: 0 -- 139 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:31 2012 Optimize a model with 6832 rows, 9688 columns and 29670 nonzeros Presolve removed 30 rows and 2070 columns Presolve time: 0.09s Presolved: 6802 rows, 7618 columns, 27600 nonzeros Variable types: 0 continuous, 7618 integer (7618 binary) Root relaxation: objective 0.000000e+00, 185 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 (185 simplex iterations) in 0.10 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 -- 69 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:31 2012 Optimize a model with 3437 rows, 4823 columns and 14620 nonzeros Presolve removed 30 rows and 1020 columns Presolve time: 0.03s Presolved: 3407 rows, 3803 columns, 13600 nonzeros Variable types: 0 continuous, 3803 integer (3803 binary) Root relaxation: objective 0.000000e+00, 183 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 (183 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% current bounds on the number of colors: 0 -- 34 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:31 2012 Optimize a model with 1788 rows, 2460 columns and 7310 nonzeros Presolve removed 30 rows and 510 columns Presolve time: 0.01s Presolved: 1758 rows, 1950 columns, 6800 nonzeros Variable types: 0 continuous, 1950 integer (1950 binary) Root relaxation: objective 0.000000e+00, 183 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 (183 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:31 2012 Optimize a model with 915 rows, 1209 columns and 3440 nonzeros Presolve removed 30 rows and 240 columns Presolve time: 0.00s Presolved: 885 rows, 969 columns, 3200 nonzeros Variable types: 0 continuous, 969 integer (969 binary) Root relaxation: objective 0.000000e+00, 185 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 (185 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:31 2012 Optimize a model with 527 rows, 653 columns and 1720 nonzeros Presolve removed 30 rows and 120 columns Presolve time: 0.00s Presolved: 497 rows, 533 columns, 1600 nonzeros Variable types: 0 continuous, 533 integer (533 binary) Root relaxation: objective 0.000000e+00, 154 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 (154 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 Sat Dec 15 16:18:31 2012 Optimize a model with 333 rows, 375 columns and 860 nonzeros Presolve removed 149 rows and 184 columns Presolve time: 0.00s Presolved: 184 rows, 191 columns, 552 nonzeros Variable types: 0 continuous, 191 integer (191 binary) Root relaxation: objective 0.000000e+00, 94 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 59 - 0.00000 - - 0s Explored 0 nodes (242 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 Sat Dec 15 16:18:31 2012 Optimize a model with 430 rows, 514 columns and 1290 nonzeros Presolve removed 30 rows and 90 columns Presolve time: 0.00s Presolved: 400 rows, 424 columns, 1200 nonzeros Variable types: 0 continuous, 424 integer (424 binary) Root relaxation: objective 0.000000e+00, 156 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 (156 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