current bounds on the number of colors: 0 -- 111 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:15 2012 Optimize a model with 32121 rows, 6687 columns and 102135 nonzeros Presolve time: 0.15s Presolved: 32121 rows, 6687 columns, 102135 nonzeros Variable types: 0 continuous, 6687 integer (6687 binary) Root relaxation: objective 0.000000e+00, 386 iterations, 0.02 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 (752 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:16 2012 Optimize a model with 15825 rows, 3579 columns and 50139 nonzeros Presolve time: 0.07s Presolved: 15825 rows, 3579 columns, 50139 nonzeros Variable types: 0 continuous, 3579 integer (3579 binary) Root relaxation: objective 0.000000e+00, 278 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 (614 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:16 2012 Optimize a model with 7677 rows, 2025 columns and 24141 nonzeros Presolve time: 0.02s Presolved: 7677 rows, 2025 columns, 24141 nonzeros Variable types: 0 continuous, 2025 integer (2025 binary) Root relaxation: objective 0.000000e+00, 230 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 (455 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:16 2012 Optimize a model with 3603 rows, 1248 columns and 11142 nonzeros Presolve time: 0.01s Presolved: 3603 rows, 1248 columns, 11142 nonzeros Variable types: 0 continuous, 1248 integer (1248 binary) Root relaxation: objective 0.000000e+00, 238 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 15 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1222 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:16 2012 Optimize a model with 1857 rows, 915 columns and 5571 nonzeros Presolve time: 0.00s Presolved: 1857 rows, 915 columns, 5571 nonzeros Variable types: 0 continuous, 915 integer (915 binary) Root relaxation: objective 0.000000e+00, 254 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 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4129 simplex iterations) in 0.36 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:17 2012 Optimize a model with 2439 rows, 1026 columns and 7428 nonzeros Presolve time: 0.01s Presolved: 2439 rows, 1026 columns, 7428 nonzeros Variable types: 0 continuous, 1026 integer (1026 binary) Root relaxation: objective 0.000000e+00, 240 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 211 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 0s 0 0 0.00000 0 305 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 0 0.00000 0 309 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 305 - 0.00000 - - 1s 0 0 0.00000 0 286 - 0.00000 - - 2s 0 0 0.00000 0 282 - 0.00000 - - 2s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 0 0.00000 0 284 - 0.00000 - - 3s 0 0 0.00000 0 283 - 0.00000 - - 3s 0 2 0.00000 0 283 - 0.00000 - - 3s Cutting planes: Clique: 3 Zero half: 32 Explored 24 nodes (29221 simplex iterations) in 4.00 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:06:21 2012 Optimize a model with 3021 rows, 1137 columns and 9285 nonzeros Presolve time: 0.01s Presolved: 3021 rows, 1137 columns, 9285 nonzeros Variable types: 0 continuous, 1137 integer (1137 binary) Root relaxation: objective 0.000000e+00, 233 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 0 144 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 3 Clique: 28 Zero half: 56 Explored 0 nodes (2963 simplex iterations) in 0.20 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: 5