current bounds on the number of colors: 0 -- 162 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:37:06 2012 Optimize a model with 56214 rows, 13814 columns and 181278 nonzeros Presolve time: 0.17s Presolved: 56214 rows, 13814 columns, 181278 nonzeros Variable types: 0 continuous, 13814 integer (13814 binary) Root relaxation: objective 0.000000e+00, 633 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 (1016 simplex iterations) in 0.31 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: 0 -- 81 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:37:07 2012 Optimize a model with 27842 rows, 7172 columns and 89520 nonzeros Presolve time: 0.13s Presolved: 27842 rows, 7172 columns, 89520 nonzeros Variable types: 0 continuous, 7172 integer (7172 binary) Root relaxation: objective 0.000000e+00, 405 iterations, 0.02 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 0.19 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 -- 40 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:37:07 2012 Optimize a model with 14002 rows, 3932 columns and 44760 nonzeros Presolve time: 0.05s Presolved: 14002 rows, 3932 columns, 44760 nonzeros Variable types: 0 continuous, 3932 integer (3932 binary) Root relaxation: objective 0.000000e+00, 341 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 (642 simplex iterations) in 0.08 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 -- 20 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:37:07 2012 Optimize a model with 7082 rows, 2312 columns and 22380 nonzeros Presolve time: 0.02s Presolved: 7082 rows, 2312 columns, 22380 nonzeros Variable types: 0 continuous, 2312 integer (2312 binary) Root relaxation: objective 0.000000e+00, 348 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 (634 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 19:37:08 2012 Optimize a model with 3622 rows, 1502 columns and 11190 nonzeros Presolve time: 0.01s Presolved: 3622 rows, 1502 columns, 11190 nonzeros Variable types: 0 continuous, 1502 integer (1502 binary) Root relaxation: objective 0.000000e+00, 352 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 36 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2719 simplex iterations) in 0.13 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 19:37:08 2012 Optimize a model with 1546 rows, 1016 columns and 4476 nonzeros Presolve removed 162 rows and 162 columns Presolve time: 0.00s Presolved: 1384 rows, 854 columns, 4152 nonzeros Variable types: 0 continuous, 854 integer (854 binary) Root relaxation: objective 0.000000e+00, 178 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 0 162 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (708 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 19:37:08 2012 Optimize a model with 2238 rows, 1178 columns and 6714 nonzeros Presolve time: 0.01s Presolved: 2238 rows, 1178 columns, 6714 nonzeros Variable types: 0 continuous, 1178 integer (1178 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 0 322 - 0.00000 - - 0s 0 0 0.00000 0 322 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4348 simplex iterations) in 0.47 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 19:37:08 2012 Optimize a model with 2930 rows, 1340 columns and 8952 nonzeros Presolve time: 0.01s Presolved: 2930 rows, 1340 columns, 8952 nonzeros Variable types: 0 continuous, 1340 integer (1340 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 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 288 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 0s 0 0 0.00000 0 430 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 1s 0 0 0.00000 0 256 - 0.00000 - - 1s 0 0 0.00000 0 246 - 0.00000 - - 1s 0 0 0.00000 0 236 - 0.00000 - - 1s 0 0 0.00000 0 236 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 2 0.00000 0 292 - 0.00000 - - 2s 603 79 0.00000 26 294 - 0.00000 - 77.8 5s 610 84 0.00000 11 247 - 0.00000 - 76.9 11s 616 88 infeasible 10 - 0.00000 - 133 15s 1110 79 0.00000 21 279 - 0.00000 - 148 20s 1594 95 0.00000 28 242 - 0.00000 - 158 25s 2131 110 0.00000 21 342 - 0.00000 - 160 30s 2631 102 infeasible 21 - 0.00000 - 163 35s 3138 83 infeasible 25 - 0.00000 - 166 40s 3644 109 infeasible 26 - 0.00000 - 167 45s 4175 114 infeasible 20 - 0.00000 - 167 50s 4747 134 infeasible 27 - 0.00000 - 166 55s 5277 172 infeasible 28 - 0.00000 - 166 60s 5771 138 0.00000 15 333 - 0.00000 - 167 65s 6252 145 infeasible 26 - 0.00000 - 168 70s 6727 130 0.00000 23 275 - 0.00000 - 169 75s 7207 134 infeasible 26 - 0.00000 - 170 80s 7697 136 0.00000 18 324 - 0.00000 - 171 85s 8140 137 infeasible 25 - 0.00000 - 172 90s 8625 108 infeasible 22 - 0.00000 - 173 95s 9059 94 infeasible 22 - 0.00000 - 174 100s 9457 80 infeasible 24 - 0.00000 - 176 105s 9920 63 0.00000 20 333 - 0.00000 - 176 110s 10330 41 infeasible 22 - 0.00000 - 177 115s 10794 19 0.00000 20 343 - 0.00000 - 178 120s Cutting planes: Gomory: 2 Zero half: 16 Explored 11156 nodes (2018426 simplex iterations) in 124.64 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