current bounds on the number of colors: 0 -- 172 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:47:40 2012 Optimize a model with 66220 rows, 15560 columns and 212936 nonzeros Presolve time: 0.20s Presolved: 66220 rows, 15560 columns, 212936 nonzeros Variable types: 0 continuous, 15560 integer (15560 binary) Root relaxation: objective 0.000000e+00, 640 iterations, 0.06 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 (1035 simplex iterations) in 0.36 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 -- 86 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:47:41 2012 Optimize a model with 33196 rows, 8164 columns and 106468 nonzeros Presolve time: 0.14s Presolved: 33196 rows, 8164 columns, 106468 nonzeros Variable types: 0 continuous, 8164 integer (8164 binary) Root relaxation: objective 0.000000e+00, 521 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 (904 simplex iterations) in 0.22 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:47:42 2012 Optimize a model with 16300 rows, 4380 columns and 51996 nonzeros Presolve time: 0.06s Presolved: 16300 rows, 4380 columns, 51996 nonzeros Variable types: 0 continuous, 4380 integer (4380 binary) Root relaxation: objective 0.000000e+00, 360 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 (654 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 21:47:42 2012 Optimize a model with 7852 rows, 2488 columns and 24760 nonzeros Presolve time: 0.02s Presolved: 7852 rows, 2488 columns, 24760 nonzeros Variable types: 0 continuous, 2488 integer (2488 binary) Root relaxation: objective 0.000000e+00, 381 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 (687 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 21:47:42 2012 Optimize a model with 4012 rows, 1628 columns and 12380 nonzeros Presolve time: 0.01s Presolved: 4012 rows, 1628 columns, 12380 nonzeros Variable types: 0 continuous, 1628 integer (1628 binary) Root relaxation: objective 0.000000e+00, 391 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 89 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3964 simplex iterations) in 0.26 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 21:47:43 2012 Optimize a model with 1708 rows, 1112 columns and 4952 nonzeros Presolve removed 172 rows and 172 columns Presolve time: 0.00s Presolved: 1536 rows, 940 columns, 4608 nonzeros Variable types: 0 continuous, 940 integer (940 binary) Root relaxation: objective 0.000000e+00, 176 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 0 172 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (729 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 21:47:43 2012 Optimize a model with 2476 rows, 1284 columns and 7428 nonzeros Presolve time: 0.01s Presolved: 2476 rows, 1284 columns, 7428 nonzeros Variable types: 0 continuous, 1284 integer (1284 binary) Root relaxation: objective 0.000000e+00, 395 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 0 336 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3905 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 21:47:43 2012 Optimize a model with 3244 rows, 1456 columns and 9904 nonzeros Presolve time: 0.01s Presolved: 3244 rows, 1456 columns, 9904 nonzeros Variable types: 0 continuous, 1456 integer (1456 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 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 300 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 282 - 0.00000 - - 1s 0 0 0.00000 0 276 - 0.00000 - - 2s 0 0 0.00000 0 276 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 2s 0 2 0.00000 0 274 - 0.00000 - - 3s 432 54 0.00000 26 276 - 0.00000 - 97.3 5s 808 59 0.00000 20 395 - 0.00000 - 89.0 10s 814 63 0.00000 4 353 - 0.00000 - 88.4 15s 839 77 0.00000 20 294 - 0.00000 - 138 20s 1299 44 infeasible 24 - 0.00000 - 152 25s 1718 105 infeasible 27 - 0.00000 - 164 30s 2123 108 infeasible 29 - 0.00000 - 171 35s 2495 68 infeasible 22 - 0.00000 - 180 40s 2906 83 infeasible 26 - 0.00000 - 183 45s 3309 86 infeasible 30 - 0.00000 - 186 50s 3727 74 infeasible 26 - 0.00000 - 188 55s 4074 21 0.00000 17 383 - 0.00000 - 191 60s 4436 9 0.00000 20 286 - 0.00000 - 194 65s Cutting planes: Gomory: 3 Zero half: 28 Explored 4488 nodes (898858 simplex iterations) in 65.79 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