current bounds on the number of colors: 0 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 3764 rows, 5740 columns and 16642 nonzeros Presolve removed 28 rows and 1484 columns Presolve time: 0.04s Presolved: 3736 rows, 4256 columns, 15158 nonzeros Variable types: 0 continuous, 4256 integer (4256 binary) Root relaxation: objective 0.000000e+00, 133 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 (133 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 1901 rows, 2851 columns and 8164 nonzeros Presolve removed 28 rows and 728 columns Presolve time: 0.01s Presolved: 1873 rows, 2123 columns, 7436 nonzeros Variable types: 0 continuous, 2123 integer (2123 binary) Root relaxation: objective 0.000000e+00, 133 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 (133 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 1004 rows, 1460 columns and 4082 nonzeros Presolve removed 28 rows and 364 columns Presolve time: 0.01s Presolved: 976 rows, 1096 columns, 3718 nonzeros Variable types: 0 continuous, 1096 integer (1096 binary) Root relaxation: objective 0.000000e+00, 131 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 (131 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 521 rows, 711 columns and 1884 nonzeros Presolve removed 28 rows and 168 columns Presolve time: 0.00s Presolved: 493 rows, 543 columns, 1716 nonzeros Variable types: 0 continuous, 543 integer (543 binary) Root relaxation: objective 0.000000e+00, 125 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 (125 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 314 rows, 390 columns and 942 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 286 rows, 306 columns, 858 nonzeros Variable types: 0 continuous, 306 integer (306 binary) Root relaxation: objective 0.000000e+00, 111 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 (111 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 176 rows, 176 columns and 314 nonzeros Presolve removed 176 rows and 176 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 16:15:36 2012 Optimize a model with 245 rows, 283 columns and 628 nonzeros Presolve removed 123 rows and 159 columns Presolve time: 0.00s Presolved: 122 rows, 124 columns, 366 nonzeros Variable types: 0 continuous, 124 integer (124 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 0.00000 0 53 - 0.00000 - - 0s Explored 0 nodes (223 simplex iterations) in 0.00 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