current bounds on the number of colors: 0 -- 184 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:39:17 2012 Optimize a model with 78016 rows, 17774 columns and 250424 nonzeros Presolve time: 0.25s Presolved: 78016 rows, 17774 columns, 250424 nonzeros Variable types: 0 continuous, 17774 integer (17774 binary) Root relaxation: objective 0.000000e+00, 721 iterations, 0.08 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 (1116 simplex iterations) in 0.45 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:39:18 2012 Optimize a model with 39100 rows, 9310 columns and 125212 nonzeros Presolve time: 0.15s Presolved: 39100 rows, 9310 columns, 125212 nonzeros Variable types: 0 continuous, 9310 integer (9310 binary) Root relaxation: objective 0.000000e+00, 564 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 (951 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:39:19 2012 Optimize a model with 19642 rows, 5078 columns and 62606 nonzeros Presolve time: 0.08s Presolved: 19642 rows, 5078 columns, 62606 nonzeros Variable types: 0 continuous, 5078 integer (5078 binary) Root relaxation: objective 0.000000e+00, 423 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 (766 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:39:19 2012 Optimize a model with 9490 rows, 2870 columns and 29942 nonzeros Presolve time: 0.03s Presolved: 9490 rows, 2870 columns, 29942 nonzeros Variable types: 0 continuous, 2870 integer (2870 binary) Root relaxation: objective 0.000000e+00, 387 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 (718 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 Sat Dec 15 02:39:19 2012 Optimize a model with 4414 rows, 1766 columns and 13610 nonzeros Presolve time: 0.01s Presolved: 4414 rows, 1766 columns, 13610 nonzeros Variable types: 0 continuous, 1766 integer (1766 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 0 229 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4913 simplex iterations) in 0.43 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 Sat Dec 15 02:39:20 2012 Optimize a model with 1876 rows, 1214 columns and 5444 nonzeros Presolve removed 184 rows and 184 columns Presolve time: 0.00s Presolved: 1692 rows, 1030 columns, 5076 nonzeros Variable types: 0 continuous, 1030 integer (1030 binary) Root relaxation: objective 0.000000e+00, 194 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 0 184 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (774 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 Sat Dec 15 02:39:20 2012 Optimize a model with 2722 rows, 1398 columns and 8166 nonzeros Presolve time: 0.01s Presolved: 2722 rows, 1398 columns, 8166 nonzeros Variable types: 0 continuous, 1398 integer (1398 binary) Root relaxation: objective 0.000000e+00, 437 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 0 358 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4621 simplex iterations) in 0.57 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 Sat Dec 15 02:39:20 2012 Optimize a model with 3568 rows, 1582 columns and 10888 nonzeros Presolve time: 0.01s Presolved: 3568 rows, 1582 columns, 10888 nonzeros Variable types: 0 continuous, 1582 integer (1582 binary) Root relaxation: objective 0.000000e+00, 404 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 0 354 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 0.00000 0 358 - 0.00000 - - 0s 0 0 0.00000 0 423 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 1s 0 0 0.00000 0 291 - 0.00000 - - 1s 0 0 0.00000 0 282 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 278 - 0.00000 - - 2s 0 0 0.00000 0 272 - 0.00000 - - 3s 0 0 0.00000 0 268 - 0.00000 - - 3s 0 0 0.00000 0 274 - 0.00000 - - 4s 0 0 0.00000 0 274 - 0.00000 - - 4s 0 2 0.00000 0 274 - 0.00000 - - 4s 8 8 0.00000 5 329 - 0.00000 - 433 5s 601 69 0.00000 15 340 - 0.00000 - 144 10s 607 73 0.00000 20 276 - 0.00000 - 143 15s 612 76 0.00000 12 251 - 0.00000 - 142 20s 616 79 0.00000 19 389 - 0.00000 - 141 25s 621 84 0.00000 12 389 - 0.00000 - 243 30s 868 18 0.00000 19 340 - 0.00000 - 245 35s 1127 15 infeasible 21 - 0.00000 - 247 40s 1377 13 infeasible 21 - 0.00000 - 249 45s Cutting planes: Gomory: 1 Clique: 2 Zero half: 17 Explored 1597 nodes (435813 simplex iterations) in 49.09 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