current bounds on the number of colors: 0 -- 193 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:06 2012 Optimize a model with 20065 rows, 18735 columns and 78144 nonzeros Presolve removed 23 rows and 2208 columns Presolve time: 0.12s Presolved: 20042 rows, 16527 columns, 75936 nonzeros Variable types: 0 continuous, 16527 integer (16527 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:06 2012 Optimize a model with 10129 rows, 9471 columns and 39072 nonzeros Presolve removed 23 rows and 1104 columns Presolve time: 0.09s Presolved: 10106 rows, 8367 columns, 37968 nonzeros Variable types: 0 continuous, 8367 integer (8367 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:06 2012 Optimize a model with 5161 rows, 4839 columns and 19536 nonzeros Presolve removed 23 rows and 552 columns Presolve time: 0.03s Presolved: 5138 rows, 4287 columns, 18984 nonzeros Variable types: 0 continuous, 4287 integer (4287 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:06 2012 Optimize a model with 2677 rows, 2523 columns and 9768 nonzeros Presolve removed 23 rows and 276 columns Presolve time: 0.01s Presolved: 2654 rows, 2247 columns, 9492 nonzeros Variable types: 0 continuous, 2247 integer (2247 binary) Root relaxation: objective 0.000000e+00, 313 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 (313 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:07 2012 Optimize a model with 1435 rows, 1365 columns and 4884 nonzeros Presolve removed 23 rows and 138 columns Presolve time: 0.00s Presolved: 1412 rows, 1227 columns, 4746 nonzeros Variable types: 0 continuous, 1227 integer (1227 binary) Root relaxation: objective 0.000000e+00, 315 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 (315 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:07 2012 Optimize a model with 814 rows, 786 columns and 2442 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 791 rows, 717 columns, 2373 nonzeros Variable types: 0 continuous, 717 integer (717 binary) Root relaxation: objective 0.000000e+00, 296 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 (296 simplex iterations) in 0.00 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 16:28:07 2012 Optimize a model with 400 rows, 400 columns and 814 nonzeros Presolve removed 400 rows and 400 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 16:28:07 2012 Optimize a model with 607 rows, 593 columns and 1628 nonzeros Presolve removed 195 rows and 219 columns Presolve time: 0.00s Presolved: 412 rows, 374 columns, 1236 nonzeros Variable types: 0 continuous, 374 integer (374 binary) Root relaxation: objective 0.000000e+00, 197 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 0 168 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (654 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