current bounds on the number of colors: 0 -- 186 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:24 2012 Optimize a model with 16554 rows, 17474 columns and 66402 nonzeros Presolve removed 28 rows and 2604 columns Presolve time: 0.13s Presolved: 16526 rows, 14870 columns, 63798 nonzeros Variable types: 0 continuous, 14870 integer (14870 binary) Root relaxation: objective 0.000000e+00, 283 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 (432 simplex iterations) in 0.16 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:24 2012 Optimize a model with 8282 rows, 8732 columns and 32844 nonzeros Presolve removed 28 rows and 1288 columns Presolve time: 0.07s Presolved: 8254 rows, 7444 columns, 31556 nonzeros Variable types: 0 continuous, 7444 integer (7444 binary) Root relaxation: objective 0.000000e+00, 285 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 (285 simplex iterations) in 0.08 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:25 2012 Optimize a model with 4234 rows, 4454 columns and 16422 nonzeros Presolve removed 28 rows and 644 columns Presolve time: 0.03s Presolved: 4206 rows, 3810 columns, 15778 nonzeros Variable types: 0 continuous, 3810 integer (3810 binary) Root relaxation: objective 0.000000e+00, 282 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 (282 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:25 2012 Optimize a model with 2122 rows, 2222 columns and 7854 nonzeros Presolve removed 28 rows and 308 columns Presolve time: 0.01s Presolved: 2094 rows, 1914 columns, 7546 nonzeros Variable types: 0 continuous, 1914 integer (1914 binary) Root relaxation: objective 0.000000e+00, 277 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 (277 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:25 2012 Optimize a model with 1066 rows, 1106 columns and 3570 nonzeros Presolve removed 28 rows and 140 columns Presolve time: 0.00s Presolved: 1038 rows, 966 columns, 3430 nonzeros Variable types: 0 continuous, 966 integer (966 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (268 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:25 2012 Optimize a model with 538 rows, 548 columns and 1428 nonzeros Presolve removed 190 rows and 220 columns Presolve time: 0.00s Presolved: 348 rows, 328 columns, 1044 nonzeros Variable types: 0 continuous, 328 integer (328 binary) Root relaxation: objective 0.000000e+00, 170 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 0 143 - 0.00000 - - 0s Explored 0 nodes (512 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:25 2012 Optimize a model with 714 rows, 734 columns and 2142 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 686 rows, 650 columns, 2058 nonzeros Variable types: 0 continuous, 650 integer (650 binary) Root relaxation: objective 0.000000e+00, 265 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 (265 simplex iterations) in 0.00 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% optimal solution found: number of colors: 3