current bounds on the number of colors: 0 -- 136 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 5576 rows, 9328 columns and 25568 nonzeros Presolve removed 49 rows and 3332 columns Presolve time: 0.07s Presolved: 5527 rows, 5996 columns, 22236 nonzeros Variable types: 0 continuous, 5996 integer (5996 binary) Root relaxation: objective 0.000000e+00, 142 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 (142 simplex iterations) in 0.08 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 -- 68 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 2856 rows, 4704 columns and 12784 nonzeros Presolve removed 49 rows and 1666 columns Presolve time: 0.02s Presolved: 2807 rows, 3038 columns, 11118 nonzeros Variable types: 0 continuous, 3038 integer (3038 binary) Root relaxation: objective 0.000000e+00, 142 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 (142 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 -- 34 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 1496 rows, 2392 columns and 6392 nonzeros Presolve removed 49 rows and 833 columns Presolve time: 0.01s Presolved: 1447 rows, 1559 columns, 5559 nonzeros Variable types: 0 continuous, 1559 integer (1559 binary) Root relaxation: objective 0.000000e+00, 142 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 (142 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 776 rows, 1168 columns and 3008 nonzeros Presolve removed 49 rows and 392 columns Presolve time: 0.00s Presolved: 727 rows, 776 columns, 2616 nonzeros Variable types: 0 continuous, 776 integer (776 binary) Root relaxation: objective 0.000000e+00, 152 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 (152 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 456 rows, 624 columns and 1504 nonzeros Presolve removed 49 rows and 196 columns Presolve time: 0.00s Presolved: 407 rows, 428 columns, 1308 nonzeros Variable types: 0 continuous, 428 integer (428 binary) Root relaxation: objective 0.000000e+00, 129 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 (129 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 296 rows, 352 columns and 752 nonzeros Presolve removed 138 rows and 188 columns Presolve time: 0.00s Presolved: 158 rows, 164 columns, 474 nonzeros Variable types: 0 continuous, 164 integer (164 binary) Root relaxation: objective 0.000000e+00, 69 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 (69 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:08 2012 Optimize a model with 216 rows, 216 columns and 376 nonzeros Presolve removed 216 rows and 216 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 - optimal solution found: number of colors: 2