current bounds on the number of colors: 0 -- 235 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:02 2012 Optimize a model with 31825 rows, 27765 columns and 122265 nonzeros Presolve removed 21 rows and 2457 columns Presolve time: 0.14s Presolved: 31804 rows, 25308 columns, 119808 nonzeros Variable types: 0 continuous, 25308 integer (25308 binary) Root relaxation: objective 0.000000e+00, 399 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 (399 simplex iterations) in 0.17 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:02 2012 Optimize a model with 15895 rows, 13900 columns and 60610 nonzeros Presolve removed 21 rows and 1218 columns Presolve time: 0.12s Presolved: 15874 rows, 12682 columns, 59392 nonzeros Variable types: 0 continuous, 12682 integer (12682 binary) Root relaxation: objective 0.000000e+00, 401 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 (401 simplex iterations) in 0.14 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:03 2012 Optimize a model with 8065 rows, 7085 columns and 30305 nonzeros Presolve removed 21 rows and 609 columns Presolve time: 0.05s Presolved: 8044 rows, 6476 columns, 29696 nonzeros Variable types: 0 continuous, 6476 integer (6476 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:03 2012 Optimize a model with 4015 rows, 3560 columns and 14630 nonzeros Presolve removed 21 rows and 294 columns Presolve time: 0.02s Presolved: 3994 rows, 3266 columns, 14336 nonzeros Variable types: 0 continuous, 3266 integer (3266 binary) Root relaxation: objective 0.000000e+00, 442 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 (684 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:03 2012 Optimize a model with 2125 rows, 1915 columns and 7315 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2104 rows, 1768 columns, 7168 nonzeros Variable types: 0 continuous, 1768 integer (1768 binary) Root relaxation: objective 0.000000e+00, 394 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 (394 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:03 2012 Optimize a model with 1045 rows, 975 columns and 3135 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1024 rows, 912 columns, 3072 nonzeros Variable types: 0 continuous, 912 integer (912 binary) Root relaxation: objective 0.000000e+00, 379 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 (379 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:03 2012 Optimize a model with 505 rows, 505 columns and 1045 nonzeros Presolve removed 505 rows and 505 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 16:42:03 2012 Optimize a model with 775 rows, 740 columns and 2090 nonzeros Presolve removed 245 rows and 271 columns Presolve time: 0.00s Presolved: 530 rows, 469 columns, 1590 nonzeros Variable types: 0 continuous, 469 integer (469 binary) Root relaxation: objective 0.000000e+00, 239 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 0 204 - 0.00000 - - 0s Explored 0 nodes (777 simplex iterations) in 0.01 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