current bounds on the number of colors: 0 -- 248 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:40 2012 Optimize a model with 39184 rows, 31066 columns and 147560 nonzeros Presolve removed 19 rows and 2356 columns Presolve time: 0.20s Presolved: 39165 rows, 28710 columns, 145204 nonzeros Variable types: 0 continuous, 28710 integer (28710 binary) Root relaxation: objective 0.000000e+00, 461 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 (688 simplex iterations) in 0.27 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 16:47:41 2012 Optimize a model with 19716 rows, 15690 columns and 73780 nonzeros Presolve removed 19 rows and 1178 columns Presolve time: 0.13s Presolved: 19697 rows, 14512 columns, 72602 nonzeros Variable types: 0 continuous, 14512 integer (14512 binary) Root relaxation: objective 0.000000e+00, 454 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 (667 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:42 2012 Optimize a model with 9982 rows, 8002 columns and 36890 nonzeros Presolve removed 19 rows and 589 columns Presolve time: 0.06s Presolved: 9963 rows, 7413 columns, 36301 nonzeros Variable types: 0 continuous, 7413 integer (7413 binary) Root relaxation: objective 0.000000e+00, 467 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 (467 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 16:47:42 2012 Optimize a model with 4958 rows, 4034 columns and 17850 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 4939 rows, 3749 columns, 17565 nonzeros Variable types: 0 continuous, 3749 integer (3749 binary) Root relaxation: objective 0.000000e+00, 448 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 (699 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 16:47:42 2012 Optimize a model with 2446 rows, 2050 columns and 8330 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2427 rows, 1917 columns, 8197 nonzeros Variable types: 0 continuous, 1917 integer (1917 binary) Root relaxation: objective 0.000000e+00, 441 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 (646 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 16:47:42 2012 Optimize a model with 1190 rows, 1058 columns and 3570 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1171 rows, 1001 columns, 3513 nonzeros Variable types: 0 continuous, 1001 integer (1001 binary) Root relaxation: objective 0.000000e+00, 456 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 (643 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 16:47:42 2012 Optimize a model with 562 rows, 562 columns and 1190 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 16:47:42 2012 Optimize a model with 876 rows, 810 columns and 2380 nonzeros Presolve removed 248 rows and 267 columns Presolve time: 0.00s Presolved: 628 rows, 543 columns, 1884 nonzeros Variable types: 0 continuous, 543 integer (543 binary) Root relaxation: objective 0.000000e+00, 264 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 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (846 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