current bounds on the number of colors: 0 -- 177 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:03 2012 Optimize a model with 67937 rows, 16346 columns and 218856 nonzeros Presolve time: 0.21s Presolved: 67937 rows, 16346 columns, 218856 nonzeros Variable types: 0 continuous, 16346 integer (16346 binary) Root relaxation: objective 0.000000e+00, 737 iterations, 0.07 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 (1140 simplex iterations) in 0.38 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 -- 88 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:04 2012 Optimize a model with 34057 rows, 8558 columns and 109428 nonzeros Presolve time: 0.15s Presolved: 34057 rows, 8558 columns, 109428 nonzeros Variable types: 0 continuous, 8558 integer (8558 binary) Root relaxation: objective 0.000000e+00, 626 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 (1005 simplex iterations) in 0.23 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 -- 44 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:05 2012 Optimize a model with 17117 rows, 4664 columns and 54714 nonzeros Presolve time: 0.07s Presolved: 17117 rows, 4664 columns, 54714 nonzeros Variable types: 0 continuous, 4664 integer (4664 binary) Root relaxation: objective 0.000000e+00, 375 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 (680 simplex iterations) in 0.10 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 -- 22 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:05 2012 Optimize a model with 8647 rows, 2717 columns and 27357 nonzeros Presolve time: 0.03s Presolved: 8647 rows, 2717 columns, 27357 nonzeros Variable types: 0 continuous, 2717 integer (2717 binary) Root relaxation: objective 0.000000e+00, 368 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 (673 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 -- 11 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:06 2012 Optimize a model with 4027 rows, 1655 columns and 12435 nonzeros Presolve time: 0.01s Presolved: 4027 rows, 1655 columns, 12435 nonzeros Variable types: 0 continuous, 1655 integer (1655 binary) Root relaxation: objective 0.000000e+00, 375 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 0 144 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2882 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:06 2012 Optimize a model with 1717 rows, 1124 columns and 4974 nonzeros Presolve removed 177 rows and 177 columns Presolve time: 0.00s Presolved: 1540 rows, 947 columns, 4620 nonzeros Variable types: 0 continuous, 947 integer (947 binary) Root relaxation: objective 0.000000e+00, 188 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 0 177 - 0.00000 - - 0s Explored 0 nodes (737 simplex iterations) in 0.02 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:06 2012 Optimize a model with 2487 rows, 1301 columns and 7461 nonzeros Presolve time: 0.01s Presolved: 2487 rows, 1301 columns, 7461 nonzeros Variable types: 0 continuous, 1301 integer (1301 binary) Root relaxation: objective 0.000000e+00, 407 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 0 350 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 439 - 0.00000 - - 0s 0 0 0.00000 0 498 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 1 Zero half: 508 Explored 0 nodes (7508 simplex iterations) in 0.87 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:36:07 2012 Optimize a model with 3257 rows, 1478 columns and 9948 nonzeros Presolve time: 0.01s Presolved: 3257 rows, 1478 columns, 9948 nonzeros Variable types: 0 continuous, 1478 integer (1478 binary) Root relaxation: objective 0.000000e+00, 399 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 0 324 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 0s 0 0 0.00000 0 329 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 1s 0 0 0.00000 0 297 - 0.00000 - - 1s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 252 - 0.00000 - - 1s 0 0 0.00000 0 251 - 0.00000 - - 2s 0 0 0.00000 0 250 - 0.00000 - - 2s 0 0 0.00000 0 238 - 0.00000 - - 2s 0 0 0.00000 0 238 - 0.00000 - - 3s 0 0 0.00000 0 238 - 0.00000 - - 3s 0 0 0.00000 0 224 - 0.00000 - - 3s 0 0 0.00000 0 224 - 0.00000 - - 3s 0 0 0.00000 0 224 - 0.00000 - - 4s 0 2 0.00000 0 224 - 0.00000 - - 4s 48 32 0.00000 10 366 - 0.00000 - 130 5s 707 119 0.00000 5 276 - 0.00000 - 90.7 10s 713 123 0.00000 9 400 - 0.00000 - 90.0 15s 807 130 infeasible 23 - 0.00000 - 152 20s 1250 75 infeasible 28 - 0.00000 - 166 25s 1735 92 0.00000 21 347 - 0.00000 - 170 30s 2212 101 infeasible 24 - 0.00000 - 173 35s 2618 63 0.00000 22 300 - 0.00000 - 180 40s 3078 51 infeasible 25 - 0.00000 - 181 45s 3573 50 infeasible 24 - 0.00000 - 181 50s 4079 50 0.00000 24 342 - 0.00000 - 180 55s 4511 44 infeasible 23 - 0.00000 - 182 60s 4939 44 0.00000 21 341 - 0.00000 - 183 65s 5348 39 infeasible 29 - 0.00000 - 185 70s 5816 53 infeasible 27 - 0.00000 - 186 75s 6218 35 infeasible 22 - 0.00000 - 187 80s Cutting planes: Zero half: 19 Explored 6488 nodes (1263149 simplex iterations) in 83.69 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