current bounds on the number of colors: 0 -- 142 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:43 2012 Optimize a model with 38624 rows, 10624 columns and 125528 nonzeros Presolve time: 0.15s Presolved: 38624 rows, 10624 columns, 125528 nonzeros Variable types: 0 continuous, 10624 integer (10624 binary) Root relaxation: objective 0.000000e+00, 436 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 (704 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 -- 71 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:44 2012 Optimize a model with 19112 rows, 5512 columns and 61880 nonzeros Presolve time: 0.10s Presolved: 19112 rows, 5512 columns, 61880 nonzeros Variable types: 0 continuous, 5512 integer (5512 binary) Root relaxation: objective 0.000000e+00, 357 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 (623 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 -- 35 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:44 2012 Optimize a model with 9356 rows, 2956 columns and 30056 nonzeros Presolve time: 0.03s Presolved: 9356 rows, 2956 columns, 30056 nonzeros Variable types: 0 continuous, 2956 integer (2956 binary) Root relaxation: objective 0.000000e+00, 295 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 (683 simplex iterations) in 0.07 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:44 2012 Optimize a model with 4478 rows, 1678 columns and 14144 nonzeros Presolve time: 0.01s Presolved: 4478 rows, 1678 columns, 14144 nonzeros Variable types: 0 continuous, 1678 integer (1678 binary) Root relaxation: objective 0.000000e+00, 314 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 (563 simplex iterations) in 0.03 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:44 2012 Optimize a model with 2310 rows, 1110 columns and 7072 nonzeros Presolve time: 0.01s Presolved: 2310 rows, 1110 columns, 7072 nonzeros Variable types: 0 continuous, 1110 integer (1110 binary) Root relaxation: objective 0.000000e+00, 321 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 0 260 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 330 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 2 0.00000 0 303 - 0.00000 - - 0s * 92 2 28 0.0000000 0.00000 0.0% 82.0 1s Cutting planes: Gomory: 4 Zero half: 7 Explored 93 nodes (16395 simplex iterations) in 1.15 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:46 2012 Optimize a model with 1226 rows, 826 columns and 3536 nonzeros Presolve removed 142 rows and 142 columns Presolve time: 0.00s Presolved: 1084 rows, 684 columns, 3252 nonzeros Variable types: 0 continuous, 684 integer (684 binary) Root relaxation: objective 0.000000e+00, 147 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 0 142 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (581 simplex iterations) in 0.01 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:46 2012 Optimize a model with 1768 rows, 968 columns and 5304 nonzeros Presolve time: 0.00s Presolved: 1768 rows, 968 columns, 5304 nonzeros Variable types: 0 continuous, 968 integer (968 binary) Root relaxation: objective 0.000000e+00, 336 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 0 282 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3311 simplex iterations) in 0.27 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 4