current bounds on the number of colors: 0 -- 168 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:32:25 2012 Optimize a model with 62160 rows, 14850 columns and 200088 nonzeros Presolve time: 0.19s Presolved: 62160 rows, 14850 columns, 200088 nonzeros Variable types: 0 continuous, 14850 integer (14850 binary) Root relaxation: objective 0.000000e+00, 664 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 (1056 simplex iterations) in 0.34 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 -- 84 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:32:26 2012 Optimize a model with 31164 rows, 7794 columns and 100044 nonzeros Presolve time: 0.14s Presolved: 31164 rows, 7794 columns, 100044 nonzeros Variable types: 0 continuous, 7794 integer (7794 binary) Root relaxation: objective 0.000000e+00, 529 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 (939 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 -- 42 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:32:27 2012 Optimize a model with 15666 rows, 4266 columns and 50022 nonzeros Presolve time: 0.06s Presolved: 15666 rows, 4266 columns, 50022 nonzeros Variable types: 0 continuous, 4266 integer (4266 binary) Root relaxation: objective 0.000000e+00, 398 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 (717 simplex iterations) in 0.09 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:32:27 2012 Optimize a model with 7548 rows, 2418 columns and 23820 nonzeros Presolve time: 0.02s Presolved: 7548 rows, 2418 columns, 23820 nonzeros Variable types: 0 continuous, 2418 integer (2418 binary) Root relaxation: objective 0.000000e+00, 356 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 (701 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:32:28 2012 Optimize a model with 3858 rows, 1578 columns and 11910 nonzeros Presolve time: 0.01s Presolved: 3858 rows, 1578 columns, 11910 nonzeros Variable types: 0 continuous, 1578 integer (1578 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 (1600 simplex iterations) in 0.07 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 20:32:28 2012 Optimize a model with 1644 rows, 1074 columns and 4764 nonzeros Presolve removed 168 rows and 168 columns Presolve time: 0.00s Presolved: 1476 rows, 906 columns, 4428 nonzeros Variable types: 0 continuous, 906 integer (906 binary) Root relaxation: objective 0.000000e+00, 175 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 0 168 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (715 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 20:32:28 2012 Optimize a model with 2382 rows, 1242 columns and 7146 nonzeros Presolve time: 0.01s Presolved: 2382 rows, 1242 columns, 7146 nonzeros Variable types: 0 continuous, 1242 integer (1242 binary) Root relaxation: objective 0.000000e+00, 380 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 0 330 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4167 simplex iterations) in 0.43 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 20:32:28 2012 Optimize a model with 3120 rows, 1410 columns and 9528 nonzeros Presolve time: 0.01s Presolved: 3120 rows, 1410 columns, 9528 nonzeros Variable types: 0 continuous, 1410 integer (1410 binary) Root relaxation: objective 0.000000e+00, 388 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 0 330 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 1s 0 0 0.00000 0 242 - 0.00000 - - 1s 0 0 0.00000 0 254 - 0.00000 - - 1s 0 0 0.00000 0 234 - 0.00000 - - 1s 0 0 0.00000 0 238 - 0.00000 - - 2s 0 0 0.00000 0 235 - 0.00000 - - 2s 0 0 0.00000 0 208 - 0.00000 - - 2s 0 0 0.00000 0 196 - 0.00000 - - 3s 0 0 0.00000 0 196 - 0.00000 - - 3s 0 0 0.00000 0 200 - 0.00000 - - 3s 0 0 0.00000 0 200 - 0.00000 - - 4s 0 2 0.00000 0 200 - 0.00000 - - 4s 36 16 0.00000 11 351 - 0.00000 - 143 5s 708 56 0.00000 7 243 - 0.00000 - 84.6 11s 713 59 0.00000 13 190 - 0.00000 - 84.0 15s 726 68 0.00000 15 344 - 0.00000 - 152 20s 1014 45 0.00000 18 339 - 0.00000 - 173 25s 1400 57 0.00000 30 282 - 0.00000 - 179 30s 1798 53 infeasible 21 - 0.00000 - 183 35s 2176 59 0.00000 26 355 - 0.00000 - 187 40s 2541 50 0.00000 22 373 - 0.00000 - 191 45s 2925 56 0.00000 25 341 - 0.00000 - 192 50s 3330 47 infeasible 25 - 0.00000 - 193 55s 3702 31 infeasible 23 - 0.00000 - 195 60s 4053 18 0.00000 27 304 - 0.00000 - 197 65s Cutting planes: Zero half: 13 Explored 4256 nodes (885781 simplex iterations) in 67.64 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