current bounds on the number of colors: 0 -- 117 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:34 2012 Optimize a model with 38107 rows, 7441 columns and 120756 nonzeros Presolve time: 0.15s Presolved: 38107 rows, 7441 columns, 120756 nonzeros Variable types: 0 continuous, 7441 integer (7441 binary) Root relaxation: objective 0.000000e+00, 286 iterations, 0.04 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 (550 simplex iterations) in 0.24 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:35 2012 Optimize a model with 19112 rows, 4048 columns and 60378 nonzeros Presolve time: 0.08s Presolved: 19112 rows, 4048 columns, 60378 nonzeros Variable types: 0 continuous, 4048 integer (4048 binary) Root relaxation: objective 0.000000e+00, 292 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 (541 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:35 2012 Optimize a model with 9287 rows, 2293 columns and 29148 nonzeros Presolve time: 0.03s Presolved: 9287 rows, 2293 columns, 29148 nonzeros Variable types: 0 continuous, 2293 integer (2293 binary) Root relaxation: objective 0.000000e+00, 238 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 (467 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:35 2012 Optimize a model with 4702 rows, 1474 columns and 14574 nonzeros Presolve time: 0.01s Presolved: 4702 rows, 1474 columns, 14574 nonzeros Variable types: 0 continuous, 1474 integer (1474 binary) Root relaxation: objective 0.000000e+00, 252 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 (816 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 20:37:35 2012 Optimize a model with 2082 rows, 1006 columns and 6246 nonzeros Presolve time: 0.01s Presolved: 2082 rows, 1006 columns, 6246 nonzeros Variable types: 0 continuous, 1006 integer (1006 binary) Root relaxation: objective 0.000000e+00, 253 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 0 206 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3158 simplex iterations) in 0.32 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 20:37:36 2012 Optimize a model with 3392 rows, 1240 columns and 10410 nonzeros Presolve time: 0.01s Presolved: 3392 rows, 1240 columns, 10410 nonzeros Variable types: 0 continuous, 1240 integer (1240 binary) Root relaxation: objective 0.000000e+00, 246 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 0 230 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 0s 0 0 0.00000 0 148 - 0.00000 - - 1s 0 0 0.00000 0 175 - 0.00000 - - 1s 0 0 0.00000 0 232 - 0.00000 - - 1s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 0 0.00000 0 252 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 2s 0 2 0.00000 0 274 - 0.00000 - - 2s * 135 1 32 0.0000000 0.00000 0.0% 68.9 3s Cutting planes: Clique: 1 Zero half: 12 Explored 136 nodes (34393 simplex iterations) in 3.27 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 20:37:39 2012 Optimize a model with 2737 rows, 1123 columns and 8328 nonzeros Presolve time: 0.01s Presolved: 2737 rows, 1123 columns, 8328 nonzeros Variable types: 0 continuous, 1123 integer (1123 binary) Root relaxation: objective 0.000000e+00, 259 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 0 138 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 0s 0 0 0.00000 0 329 - 0.00000 - - 1s 0 0 0.00000 0 329 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 329 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 317 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 2 0.00000 0 316 - 0.00000 - - 4s 9 4 0.00000 6 293 - 0.00000 - 480 5s Cutting planes: Clique: 17 Zero half: 21 Explored 35 nodes (31635 simplex iterations) in 5.35 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