current bounds on the number of colors: 0 -- 125 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:46:10 2012 Optimize a model with 47183 rows, 8509 columns and 148924 nonzeros Presolve time: 0.16s Presolved: 47183 rows, 8509 columns, 148924 nonzeros Variable types: 0 continuous, 8509 integer (8509 binary) Root relaxation: objective 0.000000e+00, 301 iterations, 0.05 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 (591 simplex iterations) in 0.28 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 -- 62 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:46:11 2012 Optimize a model with 23654 rows, 4634 columns and 74462 nonzeros Presolve time: 0.10s Presolved: 23654 rows, 4634 columns, 74462 nonzeros Variable types: 0 continuous, 4634 integer (4634 binary) Root relaxation: objective 0.000000e+00, 309 iterations, 0.03 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 (570 simplex iterations) in 0.16 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 Thu Dec 13 22:46:12 2012 Optimize a model with 11510 rows, 2634 columns and 36030 nonzeros Presolve time: 0.04s Presolved: 11510 rows, 2634 columns, 36030 nonzeros Variable types: 0 continuous, 2634 integer (2634 binary) Root relaxation: objective 0.000000e+00, 255 iterations, 0.01 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 (478 simplex iterations) in 0.06 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 Thu Dec 13 22:46:12 2012 Optimize a model with 5438 rows, 1634 columns and 16814 nonzeros Presolve time: 0.01s Presolved: 5438 rows, 1634 columns, 16814 nonzeros Variable types: 0 continuous, 1634 integer (1634 binary) Root relaxation: objective 0.000000e+00, 269 iterations, 0.01 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 (943 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:46:12 2012 Optimize a model with 2402 rows, 1134 columns and 7206 nonzeros Presolve time: 0.01s Presolved: 2402 rows, 1134 columns, 7206 nonzeros Variable types: 0 continuous, 1134 integer (1134 binary) Root relaxation: objective 0.000000e+00, 275 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 0 212 - 0.00000 - - 0s 0 0 0.00000 0 265 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4300 simplex iterations) in 0.46 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: 3 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:46:12 2012 Optimize a model with 3920 rows, 1384 columns and 12010 nonzeros Presolve time: 0.01s Presolved: 3920 rows, 1384 columns, 12010 nonzeros Variable types: 0 continuous, 1384 integer (1384 binary) Root relaxation: objective 0.000000e+00, 266 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 0 240 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 1s 0 0 0.00000 0 285 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 2 0.00000 0 302 - 0.00000 - - 2s 616 36 0.00000 25 226 - 0.00000 - 83.6 5s 809 45 0.00000 18 284 - 0.00000 - 82.7 10s 1001 53 infeasible 35 - 0.00000 - 124 15s * 1184 0 42 0.0000000 0.00000 0.0% 129 16s Cutting planes: Gomory: 1 Clique: 5 Zero half: 9 Explored 1185 nodes (167302 simplex iterations) in 16.67 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:46:29 2012 Optimize a model with 3161 rows, 1259 columns and 9608 nonzeros Presolve time: 0.01s Presolved: 3161 rows, 1259 columns, 9608 nonzeros Variable types: 0 continuous, 1259 integer (1259 binary) Root relaxation: objective 0.000000e+00, 288 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 1s 0 0 0.00000 0 382 - 0.00000 - - 1s 0 0 0.00000 0 377 - 0.00000 - - 1s 0 0 0.00000 0 362 - 0.00000 - - 2s 0 0 0.00000 0 362 - 0.00000 - - 3s 0 0 0.00000 0 362 - 0.00000 - - 3s 0 2 0.00000 0 362 - 0.00000 - - 4s Cutting planes: Gomory: 1 Clique: 16 Zero half: 20 Explored 29 nodes (27812 simplex iterations) in 4.75 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5