current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:21 2012 Optimize a model with 38992 rows, 30696 columns and 146616 nonzeros Presolve removed 13 rows and 1599 columns Presolve time: 0.20s Presolved: 38979 rows, 29097 columns, 145017 nonzeros Variable types: 0 continuous, 29097 integer (29097 binary) Root relaxation: objective 0.000000e+00, 450 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 (450 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:21 2012 Optimize a model with 19462 rows, 15382 columns and 72712 nonzeros Presolve removed 13 rows and 793 columns Presolve time: 0.13s Presolved: 19449 rows, 14589 columns, 71919 nonzeros Variable types: 0 continuous, 14589 integer (14589 binary) Root relaxation: objective 0.000000e+00, 449 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 (449 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:22 2012 Optimize a model with 9697 rows, 7725 columns and 35760 nonzeros Presolve removed 13 rows and 390 columns Presolve time: 0.06s Presolved: 9684 rows, 7335 columns, 35370 nonzeros Variable types: 0 continuous, 7335 integer (7335 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:22 2012 Optimize a model with 4972 rows, 4020 columns and 17880 nonzeros Presolve removed 13 rows and 195 columns Presolve time: 0.02s Presolved: 4959 rows, 3825 columns, 17685 nonzeros Variable types: 0 continuous, 3825 integer (3825 binary) Root relaxation: objective 0.000000e+00, 474 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 (474 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 16:47:22 2012 Optimize a model with 2452 rows, 2044 columns and 8344 nonzeros Presolve removed 13 rows and 91 columns Presolve time: 0.01s Presolved: 2439 rows, 1953 columns, 8253 nonzeros Variable types: 0 continuous, 1953 integer (1953 binary) Root relaxation: objective 0.000000e+00, 461 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 (461 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 16:47:22 2012 Optimize a model with 1192 rows, 1056 columns and 3576 nonzeros Presolve removed 13 rows and 39 columns Presolve time: 0.00s Presolved: 1179 rows, 1017 columns, 3537 nonzeros Variable types: 0 continuous, 1017 integer (1017 binary) Root relaxation: objective 0.000000e+00, 490 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 (733 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 16:47:22 2012 Optimize a model with 562 rows, 562 columns and 1192 nonzeros Presolve removed 562 rows and 562 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 16:47:22 2012 Optimize a model with 877 rows, 809 columns and 2384 nonzeros Presolve removed 247 rows and 260 columns Presolve time: 0.00s Presolved: 630 rows, 549 columns, 1890 nonzeros Variable types: 0 continuous, 549 integer (549 binary) Root relaxation: objective 0.000000e+00, 268 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 0 234 - 0.00000 - - 0s Explored 0 nodes (890 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