current bounds on the number of colors: 0 -- 224 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:46 2012 Optimize a model with 28000 rows, 25336 columns and 108416 nonzeros Presolve removed 22 rows and 2464 columns Presolve time: 0.14s Presolved: 27978 rows, 22872 columns, 105952 nonzeros Variable types: 0 continuous, 22872 integer (22872 binary) Root relaxation: objective 0.000000e+00, 370 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 (370 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 -- 112 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:46 2012 Optimize a model with 14112 rows, 12792 columns and 54208 nonzeros Presolve removed 22 rows and 1232 columns Presolve time: 0.13s Presolved: 14090 rows, 11560 columns, 52976 nonzeros Variable types: 0 continuous, 11560 integer (11560 binary) Root relaxation: objective 0.000000e+00, 370 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 (370 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:47 2012 Optimize a model with 7168 rows, 6520 columns and 27104 nonzeros Presolve removed 22 rows and 616 columns Presolve time: 0.05s Presolved: 7146 rows, 5904 columns, 26488 nonzeros Variable types: 0 continuous, 5904 integer (5904 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 simplex iterations) in 0.05 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:47 2012 Optimize a model with 3696 rows, 3384 columns and 13552 nonzeros Presolve removed 22 rows and 308 columns Presolve time: 0.02s Presolved: 3674 rows, 3076 columns, 13244 nonzeros Variable types: 0 continuous, 3076 integer (3076 binary) Root relaxation: objective 0.000000e+00, 405 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 (623 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 Sat Dec 15 16:37:47 2012 Optimize a model with 1960 rows, 1816 columns and 6776 nonzeros Presolve removed 22 rows and 154 columns Presolve time: 0.01s Presolved: 1938 rows, 1662 columns, 6622 nonzeros Variable types: 0 continuous, 1662 integer (1662 binary) Root relaxation: objective 0.000000e+00, 378 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 (552 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 16:37:47 2012 Optimize a model with 968 rows, 920 columns and 2904 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 946 rows, 854 columns, 2838 nonzeros Variable types: 0 continuous, 854 integer (854 binary) Root relaxation: objective 0.000000e+00, 365 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 (498 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 16:37:47 2012 Optimize a model with 472 rows, 472 columns and 968 nonzeros Presolve removed 472 rows and 472 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 16:37:47 2012 Optimize a model with 720 rows, 696 columns and 1936 nonzeros Presolve removed 234 rows and 261 columns Presolve time: 0.00s Presolved: 486 rows, 435 columns, 1458 nonzeros Variable types: 0 continuous, 435 integer (435 binary) Root relaxation: objective 0.000000e+00, 225 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 0 189 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (713 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