current bounds on the number of colors: 0 -- 242 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:05 2012 Optimize a model with 36542 rows, 29582 columns and 138182 nonzeros Presolve removed 21 rows and 2541 columns Presolve time: 0.18s Presolved: 36521 rows, 27041 columns, 135641 nonzeros Variable types: 0 continuous, 27041 integer (27041 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 simplex iterations) in 0.21 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 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:05 2012 Optimize a model with 18242 rows, 14820 columns and 68520 nonzeros Presolve removed 21 rows and 1260 columns Presolve time: 0.13s Presolved: 18221 rows, 13560 columns, 67260 nonzeros Variable types: 0 continuous, 13560 integer (13560 binary) Root relaxation: objective 0.000000e+00, 429 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 (429 simplex iterations) in 0.16 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:06 2012 Optimize a model with 9242 rows, 7560 columns and 34260 nonzeros Presolve removed 21 rows and 630 columns Presolve time: 0.06s Presolved: 9221 rows, 6930 columns, 33630 nonzeros Variable types: 0 continuous, 6930 integer (6930 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 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 16:45:06 2012 Optimize a model with 4742 rows, 3930 columns and 17130 nonzeros Presolve removed 21 rows and 315 columns Presolve time: 0.02s Presolved: 4721 rows, 3615 columns, 16815 nonzeros Variable types: 0 continuous, 3615 integer (3615 binary) Root relaxation: objective 0.000000e+00, 458 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 (720 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:06 2012 Optimize a model with 2342 rows, 1994 columns and 7994 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2321 rows, 1847 columns, 7847 nonzeros Variable types: 0 continuous, 1847 integer (1847 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 16:45:06 2012 Optimize a model with 1142 rows, 1026 columns and 3426 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1121 rows, 963 columns, 3363 nonzeros Variable types: 0 continuous, 963 integer (963 binary) Root relaxation: objective 0.000000e+00, 438 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 (594 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 16:45:06 2012 Optimize a model with 542 rows, 542 columns and 1142 nonzeros Presolve removed 542 rows and 542 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 16:45:06 2012 Optimize a model with 842 rows, 784 columns and 2284 nonzeros Presolve removed 248 rows and 272 columns Presolve time: 0.00s Presolved: 594 rows, 512 columns, 1782 nonzeros Variable types: 0 continuous, 512 integer (512 binary) Root relaxation: objective 0.000000e+00, 247 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 0 215 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (814 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