current bounds on the number of colors: 0 -- 127 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:08 2012 Optimize a model with 5986 rows, 8094 columns and 25578 nonzeros Presolve removed 25 rows and 1575 columns Presolve time: 0.07s Presolved: 5961 rows, 6519 columns, 24003 nonzeros Variable types: 0 continuous, 6519 integer (6519 binary) Root relaxation: objective 0.000000e+00, 177 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 (177 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 -- 63 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:08 2012 Optimize a model with 3010 rows, 4030 columns and 12586 nonzeros Presolve removed 25 rows and 775 columns Presolve time: 0.02s Presolved: 2985 rows, 3255 columns, 11811 nonzeros Variable types: 0 continuous, 3255 integer (3255 binary) Root relaxation: objective 0.000000e+00, 178 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 (178 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:08 2012 Optimize a model with 1522 rows, 1998 columns and 6090 nonzeros Presolve removed 25 rows and 375 columns Presolve time: 0.01s Presolved: 1497 rows, 1623 columns, 5715 nonzeros Variable types: 0 continuous, 1623 integer (1623 binary) Root relaxation: objective 0.000000e+00, 182 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 (182 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:08 2012 Optimize a model with 778 rows, 982 columns and 2842 nonzeros Presolve removed 25 rows and 175 columns Presolve time: 0.00s Presolved: 753 rows, 807 columns, 2667 nonzeros Variable types: 0 continuous, 807 integer (807 binary) Root relaxation: objective 0.000000e+00, 177 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 (177 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:08 2012 Optimize a model with 406 rows, 474 columns and 1218 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 381 rows, 399 columns, 1143 nonzeros Variable types: 0 continuous, 399 integer (399 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:08 2012 Optimize a model with 220 rows, 220 columns and 406 nonzeros Presolve removed 220 rows and 220 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 16:17:08 2012 Optimize a model with 313 rows, 347 columns and 812 nonzeros Presolve removed 139 rows and 170 columns Presolve time: 0.00s Presolved: 174 rows, 177 columns, 522 nonzeros Variable types: 0 continuous, 177 integer (177 binary) Root relaxation: objective 0.000000e+00, 91 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 63 - 0.00000 - - 0s Explored 0 nodes (271 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