current bounds on the number of colors: 0 -- 246 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:47 2012 Optimize a model with 37023 rows, 30557 columns and 140589 nonzeros Presolve removed 23 rows and 2829 columns Presolve time: 0.19s Presolved: 37000 rows, 27728 columns, 137760 nonzeros Variable types: 0 continuous, 27728 integer (27728 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 simplex iterations) in 0.22 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 16:46:48 2012 Optimize a model with 18485 rows, 15305 columns and 69723 nonzeros Presolve removed 23 rows and 1403 columns Presolve time: 0.13s Presolved: 18462 rows, 13902 columns, 68320 nonzeros Variable types: 0 continuous, 13902 integer (13902 binary) Root relaxation: objective 0.000000e+00, 425 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 (425 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 16:46:49 2012 Optimize a model with 9216 rows, 7679 columns and 34290 nonzeros Presolve removed 23 rows and 690 columns Presolve time: 0.06s Presolved: 9193 rows, 6989 columns, 33600 nonzeros Variable types: 0 continuous, 6989 integer (6989 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 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 16:46:49 2012 Optimize a model with 4731 rows, 3989 columns and 17145 nonzeros Presolve removed 23 rows and 345 columns Presolve time: 0.02s Presolved: 4708 rows, 3644 columns, 16800 nonzeros Variable types: 0 continuous, 3644 integer (3644 binary) Root relaxation: objective 0.000000e+00, 464 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 (754 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 16:46:49 2012 Optimize a model with 2339 rows, 2021 columns and 8001 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2316 rows, 1860 columns, 7840 nonzeros Variable types: 0 continuous, 1860 integer (1860 binary) Root relaxation: objective 0.000000e+00, 413 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 (413 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 16:46:49 2012 Optimize a model with 1143 rows, 1037 columns and 3429 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1120 rows, 968 columns, 3360 nonzeros Variable types: 0 continuous, 968 integer (968 binary) Root relaxation: objective 0.000000e+00, 477 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 (477 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 16:46:49 2012 Optimize a model with 545 rows, 545 columns and 1143 nonzeros Presolve removed 545 rows and 545 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 16:46:49 2012 Optimize a model with 844 rows, 791 columns and 2286 nonzeros Presolve removed 252 rows and 278 columns Presolve time: 0.00s Presolved: 592 rows, 513 columns, 1776 nonzeros Variable types: 0 continuous, 513 integer (513 binary) Root relaxation: objective 0.000000e+00, 257 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 0 217 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (840 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