current bounds on the number of colors: 0 -- 194 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:24 2012 Optimize a model with 20370 rows, 19026 columns and 79346 nonzeros Presolve removed 25 rows and 2425 columns Presolve time: 0.13s Presolved: 20345 rows, 16601 columns, 76921 nonzeros Variable types: 0 continuous, 16601 integer (16601 binary) Root relaxation: objective 0.000000e+00, 316 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 (316 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:25 2012 Optimize a model with 10178 rows, 9520 columns and 39264 nonzeros Presolve removed 25 rows and 1200 columns Presolve time: 0.09s Presolved: 10153 rows, 8320 columns, 38064 nonzeros Variable types: 0 continuous, 8320 integer (8320 binary) Root relaxation: objective 0.000000e+00, 319 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 (319 simplex iterations) in 0.10 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:25 2012 Optimize a model with 5186 rows, 4864 columns and 19632 nonzeros Presolve removed 25 rows and 600 columns Presolve time: 0.03s Presolved: 5161 rows, 4264 columns, 19032 nonzeros Variable types: 0 continuous, 4264 integer (4264 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 simplex iterations) in 0.04 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:25 2012 Optimize a model with 2690 rows, 2536 columns and 9816 nonzeros Presolve removed 25 rows and 300 columns Presolve time: 0.01s Presolved: 2665 rows, 2236 columns, 9516 nonzeros Variable types: 0 continuous, 2236 integer (2236 binary) Root relaxation: objective 0.000000e+00, 342 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 (511 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:25 2012 Optimize a model with 1442 rows, 1372 columns and 4908 nonzeros Presolve removed 25 rows and 150 columns Presolve time: 0.00s Presolved: 1417 rows, 1222 columns, 4758 nonzeros Variable types: 0 continuous, 1222 integer (1222 binary) Root relaxation: objective 0.000000e+00, 300 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 (424 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:25 2012 Optimize a model with 818 rows, 790 columns and 2454 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 793 rows, 715 columns, 2379 nonzeros Variable types: 0 continuous, 715 integer (715 binary) Root relaxation: objective 0.000000e+00, 292 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 (292 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% current bounds on the number of colors: 0 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:25 2012 Optimize a model with 402 rows, 402 columns and 818 nonzeros Presolve removed 402 rows and 402 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 16:28:25 2012 Optimize a model with 610 rows, 596 columns and 1636 nonzeros Presolve removed 200 rows and 228 columns Presolve time: 0.00s Presolved: 410 rows, 368 columns, 1230 nonzeros Variable types: 0 continuous, 368 integer (368 binary) Root relaxation: objective 0.000000e+00, 185 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 0 160 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (584 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