current bounds on the number of colors: 0 -- 248 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:46 2012 Optimize a model with 37448 rows, 31052 columns and 142352 nonzeros Presolve removed 16 rows and 1984 columns Presolve time: 0.19s Presolved: 37432 rows, 29068 columns, 140368 nonzeros Variable types: 0 continuous, 29068 integer (29068 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 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 16:47:47 2012 Optimize a model with 18848 rows, 15676 columns and 71176 nonzeros Presolve removed 16 rows and 992 columns Presolve time: 0.13s Presolved: 18832 rows, 14684 columns, 70184 nonzeros Variable types: 0 continuous, 14684 integer (14684 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 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 16:47:47 2012 Optimize a model with 9548 rows, 7988 columns and 35588 nonzeros Presolve removed 16 rows and 496 columns Presolve time: 0.06s Presolved: 9532 rows, 7492 columns, 35092 nonzeros Variable types: 0 continuous, 7492 integer (7492 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 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 16:47:47 2012 Optimize a model with 4748 rows, 4020 columns and 17220 nonzeros Presolve removed 16 rows and 240 columns Presolve time: 0.02s Presolved: 4732 rows, 3780 columns, 16980 nonzeros Variable types: 0 continuous, 3780 integer (3780 binary) Root relaxation: objective 0.000000e+00, 444 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 (444 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:48 2012 Optimize a model with 2348 rows, 2036 columns and 8036 nonzeros Presolve removed 16 rows and 112 columns Presolve time: 0.01s Presolved: 2332 rows, 1924 columns, 7924 nonzeros Variable types: 0 continuous, 1924 integer (1924 binary) Root relaxation: objective 0.000000e+00, 421 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 (421 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 16:47:48 2012 Optimize a model with 1148 rows, 1044 columns and 3444 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 1132 rows, 996 columns, 3396 nonzeros Variable types: 0 continuous, 996 integer (996 binary) Root relaxation: objective 0.000000e+00, 411 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 (584 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 16:47:48 2012 Optimize a model with 548 rows, 548 columns and 1148 nonzeros Presolve removed 548 rows and 548 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 16:47:48 2012 Optimize a model with 848 rows, 796 columns and 2296 nonzeros Presolve removed 252 rows and 270 columns Presolve time: 0.00s Presolved: 596 rows, 526 columns, 1788 nonzeros Variable types: 0 continuous, 526 integer (526 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 0 228 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (853 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