current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:26 2012 Optimize a model with 40468 rows, 30708 columns and 151044 nonzeros Presolve removed 12 rows and 1476 columns Presolve time: 0.20s Presolved: 40456 rows, 29232 columns, 149568 nonzeros Variable types: 0 continuous, 29232 integer (29232 binary) Root relaxation: objective 0.000000e+00, 472 iterations, 0.02 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 (472 simplex iterations) in 0.24 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:27 2012 Optimize a model with 20194 rows, 15394 columns and 74908 nonzeros Presolve removed 12 rows and 732 columns Presolve time: 0.13s Presolved: 20182 rows, 14662 columns, 74176 nonzeros Variable types: 0 continuous, 14662 integer (14662 binary) Root relaxation: objective 0.000000e+00, 468 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 (468 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:28 2012 Optimize a model with 10057 rows, 7737 columns and 36840 nonzeros Presolve removed 12 rows and 360 columns Presolve time: 0.06s Presolved: 10045 rows, 7377 columns, 36480 nonzeros Variable types: 0 continuous, 7377 integer (7377 binary) Root relaxation: objective 0.000000e+00, 478 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 (478 simplex iterations) in 0.07 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:28 2012 Optimize a model with 5152 rows, 4032 columns and 18420 nonzeros Presolve removed 12 rows and 180 columns Presolve time: 0.02s Presolved: 5140 rows, 3852 columns, 18240 nonzeros Variable types: 0 continuous, 3852 integer (3852 binary) Root relaxation: objective 0.000000e+00, 469 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 (740 simplex iterations) in 0.04 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:28 2012 Optimize a model with 2536 rows, 2056 columns and 8596 nonzeros Presolve removed 12 rows and 84 columns Presolve time: 0.01s Presolved: 2524 rows, 1972 columns, 8512 nonzeros Variable types: 0 continuous, 1972 integer (1972 binary) Root relaxation: objective 0.000000e+00, 447 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 (665 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:28 2012 Optimize a model with 1228 rows, 1068 columns and 3684 nonzeros Presolve removed 12 rows and 36 columns Presolve time: 0.00s Presolved: 1216 rows, 1032 columns, 3648 nonzeros Variable types: 0 continuous, 1032 integer (1032 binary) Root relaxation: objective 0.000000e+00, 498 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 (731 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 16:47:28 2012 Optimize a model with 574 rows, 574 columns and 1228 nonzeros Presolve removed 574 rows and 574 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 16:47:28 2012 Optimize a model with 901 rows, 821 columns and 2456 nonzeros Presolve removed 251 rows and 265 columns Presolve time: 0.00s Presolved: 650 rows, 556 columns, 1950 nonzeros Variable types: 0 continuous, 556 integer (556 binary) Root relaxation: objective 0.000000e+00, 262 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 0 225 - 0.00000 - - 0s Explored 0 nodes (834 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