current bounds on the number of colors: 0 -- 216 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:58 2012 Optimize a model with 24624 rows, 23554 columns and 96552 nonzeros Presolve removed 25 rows and 2700 columns Presolve time: 0.13s Presolved: 24599 rows, 20854 columns, 93852 nonzeros Variable types: 0 continuous, 20854 integer (20854 binary) Root relaxation: objective 0.000000e+00, 359 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 (359 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 -- 108 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:58 2012 Optimize a model with 12420 rows, 11890 columns and 48276 nonzeros Presolve removed 25 rows and 1350 columns Presolve time: 0.12s Presolved: 12395 rows, 10540 columns, 46926 nonzeros Variable types: 0 continuous, 10540 integer (10540 binary) Root relaxation: objective 0.000000e+00, 358 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 (358 simplex iterations) in 0.13 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:58 2012 Optimize a model with 6318 rows, 6058 columns and 24138 nonzeros Presolve removed 25 rows and 675 columns Presolve time: 0.04s Presolved: 6293 rows, 5383 columns, 23463 nonzeros Variable types: 0 continuous, 5383 integer (5383 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 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 16:34:59 2012 Optimize a model with 3154 rows, 3034 columns and 11622 nonzeros Presolve removed 25 rows and 325 columns Presolve time: 0.01s Presolved: 3129 rows, 2709 columns, 11297 nonzeros Variable types: 0 continuous, 2709 integer (2709 binary) Root relaxation: objective 0.000000e+00, 354 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 (532 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 16:34:59 2012 Optimize a model with 1572 rows, 1522 columns and 5364 nonzeros Presolve removed 25 rows and 150 columns Presolve time: 0.01s Presolved: 1547 rows, 1372 columns, 5214 nonzeros Variable types: 0 continuous, 1372 integer (1372 binary) Root relaxation: objective 0.000000e+00, 330 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 (330 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 16:34:59 2012 Optimize a model with 894 rows, 874 columns and 2682 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 869 rows, 799 columns, 2607 nonzeros Variable types: 0 continuous, 799 integer (799 binary) Root relaxation: objective 0.000000e+00, 359 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 (485 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 16:34:59 2012 Optimize a model with 442 rows, 442 columns and 894 nonzeros Presolve removed 442 rows and 442 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 16:34:59 2012 Optimize a model with 668 rows, 658 columns and 1788 nonzeros Presolve removed 224 rows and 253 columns Presolve time: 0.00s Presolved: 444 rows, 405 columns, 1332 nonzeros Variable types: 0 continuous, 405 integer (405 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 0.00000 0 180 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (715 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