current bounds on the number of colors: 0 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:08:03 2012 Optimize a model with 12605 rows, 1627 columns and 38755 nonzeros Presolve time: 0.05s Presolved: 12605 rows, 1627 columns, 38755 nonzeros Variable types: 0 continuous, 1627 integer (1627 binary) Root relaxation: objective 0.000000e+00, 100 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 (268 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:08:03 2012 Optimize a model with 6053 rows, 1063 columns and 18535 nonzeros Presolve time: 0.02s Presolved: 6053 rows, 1063 columns, 18535 nonzeros Variable types: 0 continuous, 1063 integer (1063 binary) Root relaxation: objective 0.000000e+00, 102 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 42 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (699 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:08:03 2012 Optimize a model with 2777 rows, 781 columns and 8425 nonzeros Presolve time: 0.01s Presolved: 2777 rows, 781 columns, 8425 nonzeros Variable types: 0 continuous, 781 integer (781 binary) Root relaxation: objective 0.000000e+00, 97 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 66 - 0.00000 - - 0s 0 0 0.00000 0 66 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1921 simplex iterations) in 0.19 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: 5 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:08:03 2012 Optimize a model with 4415 rows, 922 columns and 13480 nonzeros Presolve time: 0.01s Presolved: 4415 rows, 922 columns, 13480 nonzeros Variable types: 0 continuous, 922 integer (922 binary) Root relaxation: objective 0.000000e+00, 94 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 72 - 0.00000 - - 0s 0 0 0.00000 0 46 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 185 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 1s 0 0 0.00000 0 221 - 0.00000 - - 2s 0 0 0.00000 0 198 - 0.00000 - - 2s 0 0 0.00000 0 202 - 0.00000 - - 3s 0 0 0.00000 0 202 - 0.00000 - - 3s 0 2 0.00000 0 202 - 0.00000 - - 3s Cutting planes: Clique: 62 Zero half: 5 Explored 19 nodes (26279 simplex iterations) in 4.19 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: 8 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:08:08 2012 Optimize a model with 4961 rows, 969 columns and 15165 nonzeros Presolve time: 0.01s Presolved: 4961 rows, 969 columns, 15165 nonzeros Variable types: 0 continuous, 969 integer (969 binary) Root relaxation: objective 0.000000e+00, 101 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 44 - 0.00000 - - 0s 0 0 0.00000 0 39 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 192 - 0.00000 - - 0s 0 0 0.00000 0 173 - 0.00000 - - 1s 0 0 0.00000 0 170 - 0.00000 - - 1s 0 0 0.00000 0 119 - 0.00000 - - 1s 0 0 0.00000 0 108 - 0.00000 - - 2s 0 0 0.00000 0 188 - 0.00000 - - 2s 0 0 0.00000 0 120 - 0.00000 - - 3s 0 0 0.00000 0 81 - 0.00000 - - 3s 0 0 0.00000 0 86 - 0.00000 - - 4s 0 0 0.00000 0 77 - 0.00000 - - 4s 0 0 0.00000 0 161 - 0.00000 - - 4s 0 0 0.00000 0 123 - 0.00000 - - 5s 0 0 0.00000 0 63 - 0.00000 - - 5s 0 0 0.00000 0 86 - 0.00000 - - 6s 0 0 0.00000 0 86 - 0.00000 - - 6s 0 2 0.00000 0 86 - 0.00000 - - 7s 472 1 infeasible 15 - 0.00000 - 67.8 10s Cutting planes: Clique: 52 Zero half: 3 Explored 482 nodes (79297 simplex iterations) in 10.04 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: 9 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:08:18 2012 Optimize a model with 5507 rows, 1016 columns and 16850 nonzeros Presolve time: 0.02s Presolved: 5507 rows, 1016 columns, 16850 nonzeros Variable types: 0 continuous, 1016 integer (1016 binary) Root relaxation: objective 0.000000e+00, 101 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 36 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (775 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% optimal solution found: number of colors: 10