current bounds on the number of colors: 0 -- 222 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:00 2012 Optimize a model with 28416 rows, 24896 columns and 109224 nonzeros Presolve removed 21 rows and 2331 columns Presolve time: 0.14s Presolved: 28395 rows, 22565 columns, 106893 nonzeros Variable types: 0 continuous, 22565 integer (22565 binary) Root relaxation: objective 0.000000e+00, 372 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 (372 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:01 2012 Optimize a model with 14192 rows, 12464 columns and 54120 nonzeros Presolve removed 21 rows and 1155 columns Presolve time: 0.13s Presolved: 14171 rows, 11309 columns, 52965 nonzeros Variable types: 0 continuous, 11309 integer (11309 binary) Root relaxation: objective 0.000000e+00, 370 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 (370 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:01 2012 Optimize a model with 7080 rows, 6248 columns and 26568 nonzeros Presolve removed 21 rows and 567 columns Presolve time: 0.04s Presolved: 7059 rows, 5681 columns, 26001 nonzeros Variable types: 0 continuous, 5681 integer (5681 binary) Root relaxation: objective 0.000000e+00, 369 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 (369 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:02 2012 Optimize a model with 3524 rows, 3140 columns and 12792 nonzeros Presolve removed 21 rows and 273 columns Presolve time: 0.02s Presolved: 3503 rows, 2867 columns, 12519 nonzeros Variable types: 0 continuous, 2867 integer (2867 binary) Root relaxation: objective 0.000000e+00, 392 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 (593 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:02 2012 Optimize a model with 1746 rows, 1586 columns and 5904 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1725 rows, 1460 columns, 5778 nonzeros Variable types: 0 continuous, 1460 integer (1460 binary) Root relaxation: objective 0.000000e+00, 369 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 (369 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:02 2012 Optimize a model with 984 rows, 920 columns and 2952 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 963 rows, 857 columns, 2889 nonzeros Variable types: 0 continuous, 857 integer (857 binary) Root relaxation: objective 0.000000e+00, 347 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 (347 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 16:37:02 2012 Optimize a model with 476 rows, 476 columns and 984 nonzeros Presolve removed 476 rows and 476 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 16:37:02 2012 Optimize a model with 730 rows, 698 columns and 1968 nonzeros Presolve removed 222 rows and 243 columns Presolve time: 0.00s Presolved: 508 rows, 455 columns, 1524 nonzeros Variable types: 0 continuous, 455 integer (455 binary) Root relaxation: objective 0.000000e+00, 234 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 0 198 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (743 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