current bounds on the number of colors: 0 -- 151 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:04 2012 Optimize a model with 9451 rows, 11449 columns and 39225 nonzeros Presolve removed 34 rows and 2550 columns Presolve time: 0.11s Presolved: 9417 rows, 8899 columns, 36675 nonzeros Variable types: 0 continuous, 8899 integer (8899 binary) Root relaxation: objective 0.000000e+00, 205 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 (205 simplex iterations) in 0.12 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 -- 75 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:05 2012 Optimize a model with 4739 rows, 5711 columns and 19351 nonzeros Presolve removed 34 rows and 1258 columns Presolve time: 0.04s Presolved: 4705 rows, 4453 columns, 18093 nonzeros Variable types: 0 continuous, 4453 integer (4453 binary) Root relaxation: objective 0.000000e+00, 205 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 (205 simplex iterations) in 0.04 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 -- 37 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:05 2012 Optimize a model with 2383 rows, 2842 columns and 9414 nonzeros Presolve removed 34 rows and 612 columns Presolve time: 0.01s Presolved: 2349 rows, 2230 columns, 8802 nonzeros Variable types: 0 continuous, 2230 integer (2230 binary) Root relaxation: objective 0.000000e+00, 206 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 (206 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:05 2012 Optimize a model with 1267 rows, 1483 columns and 4707 nonzeros Presolve removed 34 rows and 306 columns Presolve time: 0.01s Presolved: 1233 rows, 1177 columns, 4401 nonzeros Variable types: 0 continuous, 1177 integer (1177 binary) Root relaxation: objective 0.000000e+00, 204 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 (204 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:05 2012 Optimize a model with 647 rows, 728 columns and 2092 nonzeros Presolve removed 34 rows and 136 columns Presolve time: 0.00s Presolved: 613 rows, 592 columns, 1956 nonzeros Variable types: 0 continuous, 592 integer (592 binary) Root relaxation: objective 0.000000e+00, 189 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 (256 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 16:20:05 2012 Optimize a model with 399 rows, 426 columns and 1046 nonzeros Presolve removed 157 rows and 194 columns Presolve time: 0.00s Presolved: 242 rows, 232 columns, 726 nonzeros Variable types: 0 continuous, 232 integer (232 binary) Root relaxation: objective 0.000000e+00, 120 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 0 108 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (387 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 - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:05 2012 Optimize a model with 523 rows, 577 columns and 1569 nonzeros Presolve removed 34 rows and 102 columns Presolve time: 0.00s Presolved: 489 rows, 475 columns, 1467 nonzeros Variable types: 0 continuous, 475 integer (475 binary) Root relaxation: objective 0.000000e+00, 193 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 (255 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% optimal solution found: number of colors: 3