current bounds on the number of colors: 0 -- 117 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:17 2012 Optimize a model with 40311 rows, 7479 columns and 127368 nonzeros Presolve time: 0.15s Presolved: 40311 rows, 7479 columns, 127368 nonzeros Variable types: 0 continuous, 7479 integer (7479 binary) Root relaxation: objective 0.000000e+00, 293 iterations, 0.05 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 (569 simplex iterations) in 0.25 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:17 2012 Optimize a model with 20214 rows, 4086 columns and 63684 nonzeros Presolve time: 0.09s Presolved: 20214 rows, 4086 columns, 63684 nonzeros Variable types: 0 continuous, 4086 integer (4086 binary) Root relaxation: objective 0.000000e+00, 276 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 (688 simplex iterations) in 0.14 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:18 2012 Optimize a model with 9819 rows, 2331 columns and 30744 nonzeros Presolve time: 0.03s Presolved: 9819 rows, 2331 columns, 30744 nonzeros Variable types: 0 continuous, 2331 integer (2331 binary) Root relaxation: objective 0.000000e+00, 240 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 (614 simplex iterations) in 0.06 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:18 2012 Optimize a model with 4968 rows, 1512 columns and 15372 nonzeros Presolve time: 0.01s Presolved: 4968 rows, 1512 columns, 15372 nonzeros Variable types: 0 continuous, 1512 integer (1512 binary) Root relaxation: objective 0.000000e+00, 254 iterations, 0.00 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 (847 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:18 2012 Optimize a model with 2196 rows, 1044 columns and 6588 nonzeros Presolve time: 0.01s Presolved: 2196 rows, 1044 columns, 6588 nonzeros Variable types: 0 continuous, 1044 integer (1044 binary) Root relaxation: objective 0.000000e+00, 259 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 0.00000 0 234 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3731 simplex iterations) in 0.35 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:18 2012 Optimize a model with 3582 rows, 1278 columns and 10980 nonzeros Presolve time: 0.01s Presolved: 3582 rows, 1278 columns, 10980 nonzeros Variable types: 0 continuous, 1278 integer (1278 binary) Root relaxation: objective 0.000000e+00, 251 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 0 232 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 1s 0 0 0.00000 0 301 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 1s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 2 0.00000 0 301 - 0.00000 - - 2s 589 137 0.00000 31 206 - 0.00000 - 72.7 5s 610 142 0.00000 26 274 - 0.00000 - 71.8 10s 615 145 0.00000 13 263 - 0.00000 - 71.2 15s 621 149 0.00000 18 241 - 0.00000 - 70.5 20s 1150 206 0.00000 32 205 - 0.00000 - 123 25s * 1199 0 44 0.0000000 0.00000 0.0% 123 25s Cutting planes: Clique: 1 Zero half: 13 Explored 1200 nodes (165901 simplex iterations) in 25.31 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:35:44 2012 Optimize a model with 2889 rows, 1161 columns and 8784 nonzeros Presolve time: 0.01s Presolved: 2889 rows, 1161 columns, 8784 nonzeros Variable types: 0 continuous, 1161 integer (1161 binary) Root relaxation: objective 0.000000e+00, 270 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 2s 0 0 0.00000 0 329 - 0.00000 - - 2s 0 0 0.00000 0 330 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 319 - 0.00000 - - 4s 0 0 0.00000 0 331 - 0.00000 - - 5s 0 0 0.00000 0 331 - 0.00000 - - 5s 0 2 0.00000 0 331 - 0.00000 - - 5s Cutting planes: Clique: 10 Zero half: 23 Explored 39 nodes (41476 simplex iterations) in 6.52 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