current bounds on the number of colors: 0 -- 226 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:21 2012 Optimize a model with 32770 rows, 25826 columns and 123170 nonzeros Presolve removed 21 rows and 2373 columns Presolve time: 0.15s Presolved: 32749 rows, 23453 columns, 120797 nonzeros Variable types: 0 continuous, 23453 integer (23453 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 simplex iterations) in 0.18 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 -- 113 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:22 2012 Optimize a model with 16354 rows, 12944 columns and 61040 nonzeros Presolve removed 21 rows and 1176 columns Presolve time: 0.12s Presolved: 16333 rows, 11768 columns, 59864 nonzeros Variable types: 0 continuous, 11768 integer (11768 binary) Root relaxation: objective 0.000000e+00, 396 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 (396 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:23 2012 Optimize a model with 8290 rows, 6616 columns and 30520 nonzeros Presolve removed 21 rows and 588 columns Presolve time: 0.05s Presolved: 8269 rows, 6028 columns, 29932 nonzeros Variable types: 0 continuous, 6028 integer (6028 binary) Root relaxation: objective 0.000000e+00, 404 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 (404 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:23 2012 Optimize a model with 4258 rows, 3452 columns and 15260 nonzeros Presolve removed 21 rows and 294 columns Presolve time: 0.02s Presolved: 4237 rows, 3158 columns, 14966 nonzeros Variable types: 0 continuous, 3158 integer (3158 binary) Root relaxation: objective 0.000000e+00, 414 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 (414 simplex iterations) in 0.02 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 Sat Dec 15 16:38:23 2012 Optimize a model with 2242 rows, 1870 columns and 7630 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2221 rows, 1723 columns, 7483 nonzeros Variable types: 0 continuous, 1723 integer (1723 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 simplex iterations) in 0.01 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 Sat Dec 15 16:38:23 2012 Optimize a model with 1090 rows, 966 columns and 3270 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1069 rows, 903 columns, 3207 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 433 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 (609 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:23 2012 Optimize a model with 514 rows, 514 columns and 1090 nonzeros Presolve removed 514 rows and 514 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:23 2012 Optimize a model with 802 rows, 740 columns and 2180 nonzeros Presolve removed 230 rows and 253 columns Presolve time: 0.00s Presolved: 572 rows, 487 columns, 1716 nonzeros Variable types: 0 continuous, 487 integer (487 binary) Root relaxation: objective 0.000000e+00, 232 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 0 201 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (780 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 - optimal solution found: number of colors: 3