current bounds on the number of colors: 0 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:57 2012 Optimize a model with 2401 rows, 4704 columns and 11568 nonzeros Presolve removed 35 rows and 1680 columns Presolve time: 0.03s Presolved: 2366 rows, 3024 columns, 9888 nonzeros Variable types: 0 continuous, 3024 integer (3024 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:57 2012 Optimize a model with 1249 rows, 2376 columns and 5784 nonzeros Presolve removed 35 rows and 840 columns Presolve time: 0.01s Presolved: 1214 rows, 1536 columns, 4944 nonzeros Variable types: 0 continuous, 1536 integer (1536 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:58 2012 Optimize a model with 673 rows, 1212 columns and 2892 nonzeros Presolve removed 35 rows and 420 columns Presolve time: 0.00s Presolved: 638 rows, 792 columns, 2472 nonzeros Variable types: 0 continuous, 792 integer (792 binary) Root relaxation: objective 0.000000e+00, 104 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 (104 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:58 2012 Optimize a model with 385 rows, 630 columns and 1446 nonzeros Presolve removed 35 rows and 210 columns Presolve time: 0.00s Presolved: 350 rows, 420 columns, 1236 nonzeros Variable types: 0 continuous, 420 integer (420 binary) Root relaxation: objective 0.000000e+00, 98 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 (98 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:58 2012 Optimize a model with 241 rows, 339 columns and 723 nonzeros Presolve removed 35 rows and 105 columns Presolve time: 0.00s Presolved: 206 rows, 234 columns, 618 nonzeros Variable types: 0 continuous, 234 integer (234 binary) Root relaxation: objective 0.000000e+00, 91 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 (91 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:58 2012 Optimize a model with 145 rows, 145 columns and 241 nonzeros Presolve removed 145 rows and 145 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:58 2012 Optimize a model with 193 rows, 242 columns and 482 nonzeros Presolve removed 111 rows and 153 columns Presolve time: 0.00s Presolved: 82 rows, 89 columns, 246 nonzeros Variable types: 0 continuous, 89 integer (89 binary) Root relaxation: objective 0.000000e+00, 36 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 11 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (97 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 - optimal solution found: number of colors: 3