current bounds on the number of colors: 0 -- 174 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:38:50 2012 Optimize a model with 69339 rows, 15933 columns and 222633 nonzeros Presolve time: 0.21s Presolved: 69339 rows, 15933 columns, 222633 nonzeros Variable types: 0 continuous, 15933 integer (15933 binary) Root relaxation: objective 0.000000e+00, 649 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 (1077 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 -- 87 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:38:51 2012 Optimize a model with 34359 rows, 8277 columns and 110037 nonzeros Presolve time: 0.15s Presolved: 34359 rows, 8277 columns, 110037 nonzeros Variable types: 0 continuous, 8277 integer (8277 binary) Root relaxation: objective 0.000000e+00, 571 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 (923 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:38:52 2012 Optimize a model with 16869 rows, 4449 columns and 53739 nonzeros Presolve time: 0.07s Presolved: 16869 rows, 4449 columns, 53739 nonzeros Variable types: 0 continuous, 4449 integer (4449 binary) Root relaxation: objective 0.000000e+00, 370 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 (674 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:38:52 2012 Optimize a model with 8124 rows, 2535 columns and 25590 nonzeros Presolve time: 0.02s Presolved: 8124 rows, 2535 columns, 25590 nonzeros Variable types: 0 continuous, 2535 integer (2535 binary) Root relaxation: objective 0.000000e+00, 372 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 (693 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:38:53 2012 Optimize a model with 4149 rows, 1665 columns and 12795 nonzeros Presolve time: 0.01s Presolved: 4149 rows, 1665 columns, 12795 nonzeros Variable types: 0 continuous, 1665 integer (1665 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 0 215 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3398 simplex iterations) in 0.19 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 22:38:53 2012 Optimize a model with 1764 rows, 1143 columns and 5118 nonzeros Presolve removed 174 rows and 174 columns Presolve time: 0.00s Presolved: 1590 rows, 969 columns, 4770 nonzeros Variable types: 0 continuous, 969 integer (969 binary) Root relaxation: objective 0.000000e+00, 184 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 0 174 - 0.00000 - - 0s Explored 0 nodes (735 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 22:38:53 2012 Optimize a model with 2559 rows, 1317 columns and 7677 nonzeros Presolve time: 0.01s Presolved: 2559 rows, 1317 columns, 7677 nonzeros Variable types: 0 continuous, 1317 integer (1317 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 0 346 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4537 simplex iterations) in 0.49 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 22:38:53 2012 Optimize a model with 3354 rows, 1491 columns and 10236 nonzeros Presolve time: 0.01s Presolved: 3354 rows, 1491 columns, 10236 nonzeros Variable types: 0 continuous, 1491 integer (1491 binary) Root relaxation: objective 0.000000e+00, 394 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 0 308 - 0.00000 - - 0s 0 0 0.00000 0 300 - 0.00000 - - 0s 0 0 0.00000 0 412 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 1s 0 0 0.00000 0 276 - 0.00000 - - 1s 0 0 0.00000 0 272 - 0.00000 - - 1s 0 0 0.00000 0 266 - 0.00000 - - 2s 0 0 0.00000 0 266 - 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 0 254 - 0.00000 - - 4s 0 0 0.00000 0 254 - 0.00000 - - 4s 0 0 0.00000 0 254 - 0.00000 - - 4s 0 2 0.00000 0 254 - 0.00000 - - 5s 947 44 0.00000 17 309 - 0.00000 - 101 10s 1107 56 0.00000 20 257 - 0.00000 - 102 15s 1111 59 0.00000 18 348 - 0.00000 - 102 20s 1259 63 0.00000 25 296 - 0.00000 - 142 25s 1608 66 infeasible 32 - 0.00000 - 159 30s 1947 71 infeasible 34 - 0.00000 - 170 35s 2303 66 0.00000 24 388 - 0.00000 - 176 40s 2637 75 infeasible 30 - 0.00000 - 181 45s 2948 72 infeasible 25 - 0.00000 - 187 50s 3295 61 0.00000 24 379 - 0.00000 - 190 55s 3624 54 infeasible 30 - 0.00000 - 193 60s 3943 49 infeasible 28 - 0.00000 - 196 65s 4242 28 infeasible 25 - 0.00000 - 199 70s 4590 18 infeasible 29 - 0.00000 - 200 75s Cutting planes: Gomory: 1 Clique: 1 Zero half: 11 Explored 4813 nodes (1010385 simplex iterations) in 78.39 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