current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:29:40 2012 Optimize a model with 19175 rows, 7285 columns and 64133 nonzeros Presolve time: 0.13s Presolved: 19175 rows, 7285 columns, 64133 nonzeros Variable types: 0 continuous, 7285 integer (7285 binary) Root relaxation: objective 0.000000e+00, 339 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 (541 simplex iterations) in 0.17 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 -- 59 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:29:40 2012 Optimize a model with 9485 rows, 3745 columns and 31523 nonzeros Presolve time: 0.05s Presolved: 9485 rows, 3745 columns, 31523 nonzeros Variable types: 0 continuous, 3745 integer (3745 binary) Root relaxation: objective 0.000000e+00, 296 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 (484 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 -- 29 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:29:40 2012 Optimize a model with 4640 rows, 1975 columns and 15218 nonzeros Presolve time: 0.02s Presolved: 4640 rows, 1975 columns, 15218 nonzeros Variable types: 0 continuous, 1975 integer (1975 binary) Root relaxation: objective 0.000000e+00, 244 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 (419 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 -- 14 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:29:41 2012 Optimize a model with 2379 rows, 1149 columns and 7609 nonzeros Presolve time: 0.01s Presolved: 2379 rows, 1149 columns, 7609 nonzeros Variable types: 0 continuous, 1149 integer (1149 binary) Root relaxation: objective 0.000000e+00, 262 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 (445 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 -- 7 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:29:41 2012 Optimize a model with 1087 rows, 677 columns and 3261 nonzeros Presolve time: 0.00s Presolved: 1087 rows, 677 columns, 3261 nonzeros Variable types: 0 continuous, 677 integer (677 binary) Root relaxation: objective 0.000000e+00, 260 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 0 210 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2717 simplex iterations) in 0.15 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 Fri Dec 14 18:29:41 2012 Optimize a model with 1733 rows, 913 columns and 5435 nonzeros Presolve time: 0.00s Presolved: 1733 rows, 913 columns, 5435 nonzeros Variable types: 0 continuous, 913 integer (913 binary) Root relaxation: objective 0.000000e+00, 272 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 (649 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:29:41 2012 Optimize a model with 1410 rows, 795 columns and 4348 nonzeros Presolve time: 0.00s Presolved: 1410 rows, 795 columns, 4348 nonzeros Variable types: 0 continuous, 795 integer (795 binary) Root relaxation: objective 0.000000e+00, 273 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 (961 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% optimal solution found: number of colors: 4