current bounds on the number of colors: 0 -- 91 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:42 2012 Optimize a model with 19576 rows, 4528 columns and 62550 nonzeros Presolve time: 0.11s Presolved: 19576 rows, 4528 columns, 62550 nonzeros Variable types: 0 continuous, 4528 integer (4528 binary) Root relaxation: objective 0.000000e+00, 240 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 (462 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 -- 45 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:42 2012 Optimize a model with 9617 rows, 2435 columns and 30580 nonzeros Presolve time: 0.04s Presolved: 9617 rows, 2435 columns, 30580 nonzeros Variable types: 0 continuous, 2435 integer (2435 binary) Root relaxation: objective 0.000000e+00, 183 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 (364 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:42 2012 Optimize a model with 4854 rows, 1434 columns and 15290 nonzeros Presolve time: 0.01s Presolved: 4854 rows, 1434 columns, 15290 nonzeros Variable types: 0 continuous, 1434 integer (1434 binary) Root relaxation: objective 0.000000e+00, 184 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 (349 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:42 2012 Optimize a model with 2256 rows, 888 columns and 6950 nonzeros Presolve time: 0.01s Presolved: 2256 rows, 888 columns, 6950 nonzeros Variable types: 0 continuous, 888 integer (888 binary) Root relaxation: objective 0.000000e+00, 192 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 0 104 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1171 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:42 2012 Optimize a model with 957 rows, 615 columns and 2780 nonzeros Presolve removed 91 rows and 91 columns Presolve time: 0.00s Presolved: 866 rows, 524 columns, 2598 nonzeros Variable types: 0 continuous, 524 integer (524 binary) Root relaxation: objective 0.000000e+00, 99 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 91 - 0.00000 - - 0s Explored 0 nodes (394 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 Thu Dec 13 19:45:42 2012 Optimize a model with 1390 rows, 706 columns and 4170 nonzeros Presolve time: 0.00s Presolved: 1390 rows, 706 columns, 4170 nonzeros Variable types: 0 continuous, 706 integer (706 binary) Root relaxation: objective 0.000000e+00, 199 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 0 138 - 0.00000 - - 0s 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2491 simplex iterations) in 0.17 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:43 2012 Optimize a model with 1823 rows, 797 columns and 5560 nonzeros Presolve time: 0.00s Presolved: 1823 rows, 797 columns, 5560 nonzeros Variable types: 0 continuous, 797 integer (797 binary) Root relaxation: objective 0.000000e+00, 201 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 0 132 - 0.00000 - - 0s 0 0 0.00000 0 147 - 0.00000 - - 0s 0 0 0.00000 0 221 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 2 0.00000 0 228 - 0.00000 - - 1s Cutting planes: Clique: 4 Zero half: 35 Explored 111 nodes (22115 simplex iterations) in 1.63 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5