current bounds on the number of colors: 0 -- 164 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:48:15 2012 Optimize a model with 59532 rows, 14172 columns and 191552 nonzeros Presolve time: 0.18s Presolved: 59532 rows, 14172 columns, 191552 nonzeros Variable types: 0 continuous, 14172 integer (14172 binary) Root relaxation: objective 0.000000e+00, 592 iterations, 0.05 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 (592 simplex iterations) in 0.25 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 -- 82 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:48:16 2012 Optimize a model with 29848 rows, 7448 columns and 95776 nonzeros Presolve time: 0.14s Presolved: 29848 rows, 7448 columns, 95776 nonzeros Variable types: 0 continuous, 7448 integer (7448 binary) Root relaxation: objective 0.000000e+00, 439 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 (754 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% current bounds on the number of colors: 0 -- 41 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:48:17 2012 Optimize a model with 14644 rows, 4004 columns and 46720 nonzeros Presolve time: 0.06s Presolved: 14644 rows, 4004 columns, 46720 nonzeros Variable types: 0 continuous, 4004 integer (4004 binary) Root relaxation: objective 0.000000e+00, 337 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 (625 simplex iterations) in 0.09 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 -- 20 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:48:17 2012 Optimize a model with 7404 rows, 2364 columns and 23360 nonzeros Presolve time: 0.02s Presolved: 7404 rows, 2364 columns, 23360 nonzeros Variable types: 0 continuous, 2364 integer (2364 binary) Root relaxation: objective 0.000000e+00, 356 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 (653 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:48:17 2012 Optimize a model with 3784 rows, 1544 columns and 11680 nonzeros Presolve time: 0.01s Presolved: 3784 rows, 1544 columns, 11680 nonzeros Variable types: 0 continuous, 1544 integer (1544 binary) Root relaxation: objective 0.000000e+00, 371 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 (2017 simplex iterations) in 0.09 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 Fri Dec 14 19:48:17 2012 Optimize a model with 1612 rows, 1052 columns and 4672 nonzeros Presolve removed 164 rows and 164 columns Presolve time: 0.00s Presolved: 1448 rows, 888 columns, 4344 nonzeros Variable types: 0 continuous, 888 integer (888 binary) Root relaxation: objective 0.000000e+00, 173 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 0 164 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (705 simplex iterations) in 0.02 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 Fri Dec 14 19:48:17 2012 Optimize a model with 2336 rows, 1216 columns and 7008 nonzeros Presolve time: 0.01s Presolved: 2336 rows, 1216 columns, 7008 nonzeros Variable types: 0 continuous, 1216 integer (1216 binary) Root relaxation: objective 0.000000e+00, 374 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 0 322 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3780 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:48:18 2012 Optimize a model with 3060 rows, 1380 columns and 9344 nonzeros Presolve time: 0.01s Presolved: 3060 rows, 1380 columns, 9344 nonzeros Variable types: 0 continuous, 1380 integer (1380 binary) Root relaxation: objective 0.000000e+00, 362 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 0 320 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 0s 0 0 0.00000 0 369 - 0.00000 - - 0s 0 0 0.00000 0 292 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 1s 0 0 0.00000 0 280 - 0.00000 - - 1s 0 0 0.00000 0 270 - 0.00000 - - 1s 0 0 0.00000 0 258 - 0.00000 - - 2s 0 0 0.00000 0 254 - 0.00000 - - 2s 0 0 0.00000 0 240 - 0.00000 - - 2s 0 0 0.00000 0 240 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 234 - 0.00000 - - 3s 0 2 0.00000 0 234 - 0.00000 - - 3s 401 51 0.00000 22 252 - 0.00000 - 80.3 5s 1009 92 0.00000 18 234 - 0.00000 - 76.0 10s 1015 96 0.00000 6 357 - 0.00000 - 75.5 15s 1513 139 infeasible 37 - 0.00000 - 124 20s 2039 169 infeasible 28 - 0.00000 - 136 25s 2543 155 0.00000 35 246 - 0.00000 - 143 30s 3056 144 infeasible 33 - 0.00000 - 148 35s 3570 108 infeasible 30 - 0.00000 - 151 40s 4070 102 0.00000 33 276 - 0.00000 - 154 45s 4563 57 0.00000 29 309 - 0.00000 - 156 50s 5087 49 infeasible 32 - 0.00000 - 157 55s 5626 50 0.00000 27 284 - 0.00000 - 157 60s 6152 70 infeasible 33 - 0.00000 - 158 65s 6661 137 infeasible 34 - 0.00000 - 159 70s 7195 134 0.00000 32 292 - 0.00000 - 160 75s 7757 124 0.00000 29 318 - 0.00000 - 160 80s 8268 115 infeasible 35 - 0.00000 - 161 85s 8840 97 infeasible 33 - 0.00000 - 161 90s 9328 83 infeasible 30 - 0.00000 - 161 95s 9830 73 0.00000 29 290 - 0.00000 - 162 100s 10300 107 infeasible 34 - 0.00000 - 162 105s 10767 84 infeasible 34 - 0.00000 - 163 110s 11286 67 infeasible 34 - 0.00000 - 163 115s 11764 61 0.00000 31 278 - 0.00000 - 164 120s 12272 57 infeasible 28 - 0.00000 - 164 125s 12791 64 0.00000 33 286 - 0.00000 - 164 130s 13316 47 infeasible 34 - 0.00000 - 164 135s 13821 20 infeasible 32 - 0.00000 - 164 140s Cutting planes: Gomory: 1 Zero half: 31 Explored 14104 nodes (2357541 simplex iterations) in 143.30 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