current bounds on the number of colors: 0 -- 77 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:05 2012 Optimize a model with 1179 rows, 2955 columns and 6232 nonzeros Presolve removed 35 rows and 1330 columns Presolve time: 0.01s Presolved: 1144 rows, 1625 columns, 4902 nonzeros Variable types: 0 continuous, 1625 integer (1625 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 0.01 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 -- 38 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:05 2012 Optimize a model with 628 rows, 1492 columns and 3116 nonzeros Presolve removed 35 rows and 665 columns Presolve time: 0.00s Presolved: 593 rows, 827 columns, 2451 nonzeros Variable types: 0 continuous, 827 integer (827 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 0.01 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:06 2012 Optimize a model with 338 rows, 722 columns and 1476 nonzeros Presolve removed 35 rows and 315 columns Presolve time: 0.00s Presolved: 303 rows, 407 columns, 1161 nonzeros Variable types: 0 continuous, 407 integer (407 binary) Root relaxation: objective 0.000000e+00, 68 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 (68 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:06 2012 Optimize a model with 193 rows, 337 columns and 656 nonzeros Presolve removed 35 rows and 140 columns Presolve time: 0.00s Presolved: 158 rows, 197 columns, 516 nonzeros Variable types: 0 continuous, 197 integer (197 binary) Root relaxation: objective 0.000000e+00, 56 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 (56 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 16:14:06 2012 Optimize a model with 135 rows, 183 columns and 328 nonzeros Presolve removed 91 rows and 133 columns Presolve time: 0.00s Presolved: 44 rows, 50 columns, 132 nonzeros Variable types: 0 continuous, 50 integer (50 binary) Root relaxation: objective 0.000000e+00, 20 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 (20 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 16:14:06 2012 Optimize a model with 106 rows, 106 columns and 164 nonzeros Presolve removed 106 rows and 106 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