current bounds on the number of colors: 0 -- 159 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:13 2012 Optimize a model with 11614 rows, 12706 columns and 46926 nonzeros Presolve removed 28 rows and 2212 columns Presolve time: 0.11s Presolved: 11586 rows, 10494 columns, 44714 nonzeros Variable types: 0 continuous, 10494 integer (10494 binary) Root relaxation: objective 0.000000e+00, 250 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 (383 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 -- 79 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:13 2012 Optimize a model with 5814 rows, 6346 columns and 23166 nonzeros Presolve removed 28 rows and 1092 columns Presolve time: 0.05s Presolved: 5786 rows, 5254 columns, 22074 nonzeros Variable types: 0 continuous, 5254 integer (5254 binary) Root relaxation: objective 0.000000e+00, 250 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 (250 simplex iterations) in 0.05 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 -- 39 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:13 2012 Optimize a model with 2914 rows, 3166 columns and 11286 nonzeros Presolve removed 28 rows and 532 columns Presolve time: 0.02s Presolved: 2886 rows, 2634 columns, 10754 nonzeros Variable types: 0 continuous, 2634 integer (2634 binary) Root relaxation: objective 0.000000e+00, 245 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 (245 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:13 2012 Optimize a model with 1464 rows, 1576 columns and 5346 nonzeros Presolve removed 28 rows and 252 columns Presolve time: 0.01s Presolved: 1436 rows, 1324 columns, 5094 nonzeros Variable types: 0 continuous, 1324 integer (1324 binary) Root relaxation: objective 0.000000e+00, 242 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 (357 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:13 2012 Optimize a model with 739 rows, 781 columns and 2376 nonzeros Presolve removed 28 rows and 112 columns Presolve time: 0.00s Presolved: 711 rows, 669 columns, 2264 nonzeros Variable types: 0 continuous, 669 integer (669 binary) Root relaxation: objective 0.000000e+00, 216 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 (216 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 16:21:13 2012 Optimize a model with 449 rows, 463 columns and 1188 nonzeros Presolve removed 163 rows and 193 columns Presolve time: 0.00s Presolved: 286 rows, 270 columns, 858 nonzeros Variable types: 0 continuous, 270 integer (270 binary) Root relaxation: objective 0.000000e+00, 144 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 0 119 - 0.00000 - - 0s Explored 0 nodes (468 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 16:21:13 2012 Optimize a model with 594 rows, 622 columns and 1782 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 566 rows, 538 columns, 1698 nonzeros Variable types: 0 continuous, 538 integer (538 binary) Root relaxation: objective 0.000000e+00, 218 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 (218 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