current bounds on the number of colors: 0 -- 249 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:09 2012 Optimize a model with 39681 rows, 31194 columns and 149172 nonzeros Presolve removed 20 rows and 2480 columns Presolve time: 0.20s Presolved: 39661 rows, 28714 columns, 146692 nonzeros Variable types: 0 continuous, 28714 integer (28714 binary) Root relaxation: objective 0.000000e+00, 445 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 (445 simplex iterations) in 0.23 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:10 2012 Optimize a model with 19965 rows, 15756 columns and 74586 nonzeros Presolve removed 20 rows and 1240 columns Presolve time: 0.13s Presolved: 19945 rows, 14516 columns, 73346 nonzeros Variable types: 0 continuous, 14516 integer (14516 binary) Root relaxation: objective 0.000000e+00, 446 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 (446 simplex iterations) in 0.15 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:10 2012 Optimize a model with 10107 rows, 8037 columns and 37293 nonzeros Presolve removed 20 rows and 620 columns Presolve time: 0.06s Presolved: 10087 rows, 7417 columns, 36673 nonzeros Variable types: 0 continuous, 7417 integer (7417 binary) Root relaxation: objective 0.000000e+00, 450 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 (450 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:10 2012 Optimize a model with 5019 rows, 4053 columns and 18045 nonzeros Presolve removed 20 rows and 300 columns Presolve time: 0.02s Presolved: 4999 rows, 3753 columns, 17745 nonzeros Variable types: 0 continuous, 3753 integer (3753 binary) Root relaxation: objective 0.000000e+00, 471 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 (805 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:11 2012 Optimize a model with 2475 rows, 2061 columns and 8421 nonzeros Presolve removed 20 rows and 140 columns Presolve time: 0.01s Presolved: 2455 rows, 1921 columns, 8281 nonzeros Variable types: 0 continuous, 1921 integer (1921 binary) Root relaxation: objective 0.000000e+00, 455 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 (682 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 Sat Dec 15 16:48:11 2012 Optimize a model with 1203 rows, 1065 columns and 3609 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 1183 rows, 1005 columns, 3549 nonzeros Variable types: 0 continuous, 1005 integer (1005 binary) Root relaxation: objective 0.000000e+00, 483 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 (693 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 16:48:11 2012 Optimize a model with 567 rows, 567 columns and 1203 nonzeros Presolve removed 567 rows and 567 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 16:48:11 2012 Optimize a model with 885 rows, 816 columns and 2406 nonzeros Presolve removed 249 rows and 269 columns Presolve time: 0.00s Presolved: 636 rows, 547 columns, 1908 nonzeros Variable types: 0 continuous, 547 integer (547 binary) Root relaxation: objective 0.000000e+00, 261 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 0 226 - 0.00000 - - 0s Explored 0 nodes (850 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