current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:37 2012 Optimize a model with 35561 rows, 6961 columns and 112672 nonzeros Presolve time: 0.14s Presolved: 35561 rows, 6961 columns, 112672 nonzeros Variable types: 0 continuous, 6961 integer (6961 binary) Root relaxation: objective 0.000000e+00, 301 iterations, 0.04 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 (604 simplex iterations) in 0.24 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 Thu Dec 13 20:10:38 2012 Optimize a model with 17837 rows, 3797 columns and 56336 nonzeros Presolve time: 0.07s Presolved: 17837 rows, 3797 columns, 56336 nonzeros Variable types: 0 continuous, 3797 integer (3797 binary) Root relaxation: objective 0.000000e+00, 260 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 (521 simplex iterations) in 0.11 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 Thu Dec 13 20:10:38 2012 Optimize a model with 8975 rows, 2215 columns and 28168 nonzeros Presolve time: 0.03s Presolved: 8975 rows, 2215 columns, 28168 nonzeros Variable types: 0 continuous, 2215 integer (2215 binary) Root relaxation: objective 0.000000e+00, 233 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 (460 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:38 2012 Optimize a model with 4544 rows, 1424 columns and 14084 nonzeros Presolve time: 0.01s Presolved: 4544 rows, 1424 columns, 14084 nonzeros Variable types: 0 continuous, 1424 integer (1424 binary) Root relaxation: objective 0.000000e+00, 237 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 (875 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:38 2012 Optimize a model with 2012 rows, 972 columns and 6036 nonzeros Presolve time: 0.00s Presolved: 2012 rows, 972 columns, 6036 nonzeros Variable types: 0 continuous, 972 integer (972 binary) Root relaxation: objective 0.000000e+00, 273 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 0 174 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3526 simplex iterations) in 0.34 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:39 2012 Optimize a model with 3278 rows, 1198 columns and 10060 nonzeros Presolve time: 0.01s Presolved: 3278 rows, 1198 columns, 10060 nonzeros Variable types: 0 continuous, 1198 integer (1198 binary) Root relaxation: objective 0.000000e+00, 246 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 0 208 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 146 - 0.00000 - - 0s 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 1 Zero half: 6 Explored 0 nodes (9019 simplex iterations) in 0.78 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:39 2012 Optimize a model with 2645 rows, 1085 columns and 8048 nonzeros Presolve time: 0.01s Presolved: 2645 rows, 1085 columns, 8048 nonzeros Variable types: 0 continuous, 1085 integer (1085 binary) Root relaxation: objective 0.000000e+00, 258 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 322 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 1s 0 0 0.00000 0 314 - 0.00000 - - 1s 0 0 0.00000 0 308 - 0.00000 - - 2s 0 0 0.00000 0 313 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 308 - 0.00000 - - 3s 0 0 0.00000 0 308 - 0.00000 - - 3s 0 2 0.00000 0 308 - 0.00000 - - 4s Cutting planes: Clique: 7 Zero half: 21 Explored 35 nodes (29714 simplex iterations) in 4.63 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