current bounds on the number of colors: 0 -- 178 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:02:27 2012 Optimize a model with 72001 rows, 16649 columns and 231311 nonzeros Presolve time: 0.22s Presolved: 72001 rows, 16649 columns, 231311 nonzeros Variable types: 0 continuous, 16649 integer (16649 binary) Root relaxation: objective 0.000000e+00, 712 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 (1132 simplex iterations) in 0.40 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:02:28 2012 Optimize a model with 35686 rows, 8639 columns and 114356 nonzeros Presolve time: 0.15s Presolved: 35686 rows, 8639 columns, 114356 nonzeros Variable types: 0 continuous, 8639 integer (8639 binary) Root relaxation: objective 0.000000e+00, 629 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 (1044 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:02:29 2012 Optimize a model with 17932 rows, 4723 columns and 57178 nonzeros Presolve time: 0.07s Presolved: 17932 rows, 4723 columns, 57178 nonzeros Variable types: 0 continuous, 4723 integer (4723 binary) Root relaxation: objective 0.000000e+00, 411 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 (747 simplex iterations) in 0.11 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 Sat Dec 15 00:02:29 2012 Optimize a model with 9055 rows, 2765 columns and 28589 nonzeros Presolve time: 0.03s Presolved: 9055 rows, 2765 columns, 28589 nonzeros Variable types: 0 continuous, 2765 integer (2765 binary) Root relaxation: objective 0.000000e+00, 386 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 (682 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 00:02:29 2012 Optimize a model with 4213 rows, 1697 columns and 12995 nonzeros Presolve time: 0.01s Presolved: 4213 rows, 1697 columns, 12995 nonzeros Variable types: 0 continuous, 1697 integer (1697 binary) Root relaxation: objective 0.000000e+00, 392 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 72 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3306 simplex iterations) in 0.21 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 00:02:29 2012 Optimize a model with 1792 rows, 1163 columns and 5198 nonzeros Presolve removed 178 rows and 178 columns Presolve time: 0.00s Presolved: 1614 rows, 985 columns, 4842 nonzeros Variable types: 0 continuous, 985 integer (985 binary) Root relaxation: objective 0.000000e+00, 189 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 0 178 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (732 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 00:02:29 2012 Optimize a model with 2599 rows, 1341 columns and 7797 nonzeros Presolve time: 0.01s Presolved: 2599 rows, 1341 columns, 7797 nonzeros Variable types: 0 continuous, 1341 integer (1341 binary) Root relaxation: objective 0.000000e+00, 390 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 0 352 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4611 simplex iterations) in 0.48 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 00:02:30 2012 Optimize a model with 3406 rows, 1519 columns and 10396 nonzeros Presolve time: 0.01s Presolved: 3406 rows, 1519 columns, 10396 nonzeros Variable types: 0 continuous, 1519 integer (1519 binary) Root relaxation: objective 0.000000e+00, 397 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 0 332 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 394 - 0.00000 - - 0s 0 0 0.00000 0 426 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 1s 0 0 0.00000 0 280 - 0.00000 - - 1s 0 0 0.00000 0 276 - 0.00000 - - 2s 0 0 0.00000 0 285 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 3s 0 0 0.00000 0 260 - 0.00000 - - 3s 0 0 0.00000 0 256 - 0.00000 - - 3s 0 0 0.00000 0 248 - 0.00000 - - 4s 0 0 0.00000 0 250 - 0.00000 - - 4s 0 0 0.00000 0 252 - 0.00000 - - 4s 0 0 0.00000 0 252 - 0.00000 - - 4s 0 2 0.00000 0 252 - 0.00000 - - 5s 605 73 0.00000 18 290 - 0.00000 - 107 11s 609 75 0.00000 16 264 - 0.00000 - 106 15s 612 77 0.00000 18 432 - 0.00000 - 105 20s 616 80 0.00000 18 389 - 0.00000 - 105 25s 629 89 0.00000 13 355 - 0.00000 - 205 30s 1006 70 infeasible 25 - 0.00000 - 203 35s 1397 63 infeasible 25 - 0.00000 - 203 40s 1807 65 infeasible 21 - 0.00000 - 203 45s 2163 63 0.00000 25 314 - 0.00000 - 207 50s 2553 67 infeasible 27 - 0.00000 - 206 55s 2939 51 0.00000 16 351 - 0.00000 - 207 60s 3308 28 infeasible 24 - 0.00000 - 207 65s 3635 23 0.00000 19 384 - 0.00000 - 208 70s 3979 25 0.00000 21 384 - 0.00000 - 209 75s 4319 5 infeasible 17 - 0.00000 - 209 80s 4674 2 infeasible 21 - 0.00000 - 209 85s Cutting planes: Clique: 1 Zero half: 30 Explored 4699 nodes (1028936 simplex iterations) in 85.45 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