current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:23 2012 Optimize a model with 40345 rows, 30707 columns and 150675 nonzeros Presolve removed 12 rows and 1476 columns Presolve time: 0.20s Presolved: 40333 rows, 29231 columns, 149199 nonzeros Variable types: 0 continuous, 29231 integer (29231 binary) Root relaxation: objective 0.000000e+00, 471 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 (471 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 16:47:24 2012 Optimize a model with 20133 rows, 15393 columns and 74725 nonzeros Presolve removed 12 rows and 732 columns Presolve time: 0.13s Presolved: 20121 rows, 14661 columns, 73993 nonzeros Variable types: 0 continuous, 14661 integer (14661 binary) Root relaxation: objective 0.000000e+00, 471 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 (471 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 16:47:25 2012 Optimize a model with 10027 rows, 7736 columns and 36750 nonzeros Presolve removed 12 rows and 360 columns Presolve time: 0.06s Presolved: 10015 rows, 7376 columns, 36390 nonzeros Variable types: 0 continuous, 7376 integer (7376 binary) Root relaxation: objective 0.000000e+00, 467 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 (467 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 16:47:25 2012 Optimize a model with 5137 rows, 4031 columns and 18375 nonzeros Presolve removed 12 rows and 180 columns Presolve time: 0.02s Presolved: 5125 rows, 3851 columns, 18195 nonzeros Variable types: 0 continuous, 3851 integer (3851 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 (464 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 16:47:25 2012 Optimize a model with 2529 rows, 2055 columns and 8575 nonzeros Presolve removed 12 rows and 84 columns Presolve time: 0.01s Presolved: 2517 rows, 1971 columns, 8491 nonzeros Variable types: 0 continuous, 1971 integer (1971 binary) Root relaxation: objective 0.000000e+00, 440 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 (440 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 16:47:25 2012 Optimize a model with 1225 rows, 1067 columns and 3675 nonzeros Presolve removed 12 rows and 36 columns Presolve time: 0.00s Presolved: 1213 rows, 1031 columns, 3639 nonzeros Variable types: 0 continuous, 1031 integer (1031 binary) Root relaxation: objective 0.000000e+00, 493 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 (691 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 16:47:25 2012 Optimize a model with 573 rows, 573 columns and 1225 nonzeros Presolve removed 573 rows and 573 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 16:47:25 2012 Optimize a model with 899 rows, 820 columns and 2450 nonzeros Presolve removed 251 rows and 265 columns Presolve time: 0.00s Presolved: 648 rows, 555 columns, 1944 nonzeros Variable types: 0 continuous, 555 integer (555 binary) Root relaxation: objective 0.000000e+00, 255 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 0 228 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (870 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