current bounds on the number of colors: 0 -- 238 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:04 2012 Optimize a model with 33677 rows, 28603 columns and 128639 nonzeros Presolve removed 16 rows and 1904 columns Presolve time: 0.15s Presolved: 33661 rows, 26699 columns, 126735 nonzeros Variable types: 0 continuous, 26699 integer (26699 binary) Root relaxation: objective 0.000000e+00, 408 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 (408 simplex iterations) in 0.18 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 -- 119 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:04 2012 Optimize a model with 16817 rows, 14323 columns and 63779 nonzeros Presolve removed 16 rows and 944 columns Presolve time: 0.12s Presolved: 16801 rows, 13379 columns, 62835 nonzeros Variable types: 0 continuous, 13379 integer (13379 binary) Root relaxation: objective 0.000000e+00, 410 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 (410 simplex iterations) in 0.14 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:05 2012 Optimize a model with 8387 rows, 7183 columns and 31349 nonzeros Presolve removed 16 rows and 464 columns Presolve time: 0.05s Presolved: 8371 rows, 6719 columns, 30885 nonzeros Variable types: 0 continuous, 6719 integer (6719 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:05 2012 Optimize a model with 4172 rows, 3613 columns and 15134 nonzeros Presolve removed 16 rows and 224 columns Presolve time: 0.02s Presolved: 4156 rows, 3389 columns, 14910 nonzeros Variable types: 0 continuous, 3389 integer (3389 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 (656 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 16:43:05 2012 Optimize a model with 2205 rows, 1947 columns and 7567 nonzeros Presolve removed 16 rows and 112 columns Presolve time: 0.01s Presolved: 2189 rows, 1835 columns, 7455 nonzeros Variable types: 0 continuous, 1835 integer (1835 binary) Root relaxation: objective 0.000000e+00, 410 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 (598 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 16:43:05 2012 Optimize a model with 1081 rows, 995 columns and 3243 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 1065 rows, 947 columns, 3195 nonzeros Variable types: 0 continuous, 947 integer (947 binary) Root relaxation: objective 0.000000e+00, 455 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 (610 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 16:43:05 2012 Optimize a model with 519 rows, 519 columns and 1081 nonzeros Presolve removed 519 rows and 519 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 16:43:05 2012 Optimize a model with 800 rows, 757 columns and 2162 nonzeros Presolve removed 244 rows and 263 columns Presolve time: 0.00s Presolved: 556 rows, 494 columns, 1668 nonzeros Variable types: 0 continuous, 494 integer (494 binary) Root relaxation: objective 0.000000e+00, 248 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (803 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