current bounds on the number of colors: 0 -- 146 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:28 2012 Optimize a model with 78475 rows, 11731 columns and 245645 nonzeros Presolve time: 0.22s Presolved: 78475 rows, 11731 columns, 245645 nonzeros Variable types: 0 continuous, 11731 integer (11731 binary) Root relaxation: objective 0.000000e+00, 376 iterations, 0.09 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 (763 simplex iterations) in 0.42 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 -- 73 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:29 2012 Optimize a model with 38774 rows, 6329 columns and 121140 nonzeros Presolve time: 0.15s Presolved: 38774 rows, 6329 columns, 121140 nonzeros Variable types: 0 continuous, 6329 integer (6329 binary) Root relaxation: objective 0.000000e+00, 373 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 (719 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 -- 36 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:30 2012 Optimize a model with 19460 rows, 3701 columns and 60570 nonzeros Presolve time: 0.07s Presolved: 19460 rows, 3701 columns, 60570 nonzeros Variable types: 0 continuous, 3701 integer (3701 binary) Root relaxation: objective 0.000000e+00, 411 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 (1025 simplex iterations) in 0.14 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 -- 18 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:31 2012 Optimize a model with 9803 rows, 2387 columns and 30285 nonzeros Presolve time: 0.03s Presolved: 9803 rows, 2387 columns, 30285 nonzeros Variable types: 0 continuous, 2387 integer (2387 binary) Root relaxation: objective 0.000000e+00, 309 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 (1315 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:31 2012 Optimize a model with 4438 rows, 1657 columns and 13460 nonzeros Presolve time: 0.01s Presolved: 4438 rows, 1657 columns, 13460 nonzeros Variable types: 0 continuous, 1657 integer (1657 binary) Root relaxation: objective 0.000000e+00, 318 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 0 290 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 487 - 0.00000 - - 1s 0 0 0.00000 0 488 - 0.00000 - - 1s 0 0 0.00000 0 485 - 0.00000 - - 2s 0 0 0.00000 0 489 - 0.00000 - - 3s 0 0 0.00000 0 479 - 0.00000 - - 4s 0 0 0.00000 0 487 - 0.00000 - - 5s 0 0 0.00000 0 485 - 0.00000 - - 5s 0 0 0.00000 0 476 - 0.00000 - - 6s 0 0 0.00000 0 478 - 0.00000 - - 7s 0 0 0.00000 0 478 - 0.00000 - - 7s 0 2 0.00000 0 478 - 0.00000 - - 9s Cutting planes: Clique: 21 Zero half: 14 Explored 6 nodes (50371 simplex iterations) in 9.58 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:40 2012 Optimize a model with 6584 rows, 1949 columns and 20190 nonzeros Presolve time: 0.02s Presolved: 6584 rows, 1949 columns, 20190 nonzeros Variable types: 0 continuous, 1949 integer (1949 binary) Root relaxation: objective 0.000000e+00, 308 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 0 276 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 1s 0 0 0.00000 0 361 - 0.00000 - - 1s 0 0 0.00000 0 182 - 0.00000 - - 2s 0 0 0.00000 0 188 - 0.00000 - - 3s 0 0 0.00000 0 346 - 0.00000 - - 4s 0 0 0.00000 0 308 - 0.00000 - - 5s H 0 0 0.0000000 0.00000 0.0% - 5s Cutting planes: Clique: 1 Explored 0 nodes (37394 simplex iterations) in 5.31 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 15:34:46 2012 Optimize a model with 5511 rows, 1803 columns and 16825 nonzeros Presolve time: 0.01s Presolved: 5511 rows, 1803 columns, 16825 nonzeros Variable types: 0 continuous, 1803 integer (1803 binary) Root relaxation: objective 0.000000e+00, 302 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 0 292 - 0.00000 - - 0s 0 0 0.00000 0 130 - 0.00000 - - 0s 0 0 0.00000 0 281 - 0.00000 - - 1s 0 0 0.00000 0 445 - 0.00000 - - 2s 0 0 0.00000 0 378 - 0.00000 - - 3s 0 0 0.00000 0 299 - 0.00000 - - 4s 0 0 0.00000 0 403 - 0.00000 - - 5s 0 0 0.00000 0 261 - 0.00000 - - 7s 0 0 0.00000 0 234 - 0.00000 - - 8s 0 0 0.00000 0 361 - 0.00000 - - 9s 0 0 0.00000 0 375 - 0.00000 - - 10s 0 0 0.00000 0 375 - 0.00000 - - 11s 0 2 0.00000 0 375 - 0.00000 - - 12s 116 28 0.00000 15 345 - 0.00000 - 187 15s 349 29 0.00000 10 357 - 0.00000 - 196 20s 579 65 0.00000 29 331 - 0.00000 - 197 25s 605 75 0.00000 11 367 - 0.00000 - 194 32s 606 75 0.00000 23 380 - 0.00000 - 193 35s 609 77 0.00000 19 373 - 0.00000 - 192 42s 611 79 0.00000 11 377 - 0.00000 - 192 45s 652 86 0.00000 26 372 - 0.00000 - 269 50s 733 56 0.00000 28 348 - 0.00000 - 293 55s 844 34 0.00000 30 356 - 0.00000 - 300 60s 929 20 infeasible 29 - 0.00000 - 319 65s 1030 23 infeasible 29 - 0.00000 - 327 70s 1123 24 infeasible 24 - 0.00000 - 336 75s 1208 27 0.00000 30 363 - 0.00000 - 345 80s 1293 24 infeasible 26 - 0.00000 - 354 85s 1387 43 infeasible 32 - 0.00000 - 359 90s 1485 55 0.00000 35 357 - 0.00000 - 363 95s 1571 51 infeasible 31 - 0.00000 - 369 100s 1673 61 0.00000 33 335 - 0.00000 - 371 105s 1778 60 0.00000 29 369 - 0.00000 - 373 110s 1880 52 infeasible 26 - 0.00000 - 375 115s 1981 61 infeasible 31 - 0.00000 - 377 120s 2073 67 0.00000 33 352 - 0.00000 - 379 125s 2158 54 0.00000 30 368 - 0.00000 - 383 130s 2249 57 infeasible 31 - 0.00000 - 385 135s 2350 60 0.00000 29 351 - 0.00000 - 386 140s 2445 57 0.00000 30 346 - 0.00000 - 389 145s 2543 47 infeasible 29 - 0.00000 - 390 150s 2637 47 infeasible 33 - 0.00000 - 392 155s 2734 42 0.00000 24 361 - 0.00000 - 393 160s 2826 42 0.00000 26 332 - 0.00000 - 395 165s 2908 42 infeasible 30 - 0.00000 - 398 170s 2997 39 0.00000 29 343 - 0.00000 - 399 175s 3097 39 0.00000 30 377 - 0.00000 - 400 180s 3186 38 infeasible 35 - 0.00000 - 401 185s 3269 45 0.00000 26 383 - 0.00000 - 403 190s 3350 42 infeasible 25 - 0.00000 - 405 195s 3449 41 0.00000 31 324 - 0.00000 - 406 200s 3541 39 infeasible 28 - 0.00000 - 407 205s 3639 37 infeasible 35 - 0.00000 - 407 210s 3735 33 infeasible 28 - 0.00000 - 408 215s 3830 36 0.00000 33 350 - 0.00000 - 408 220s 3927 29 infeasible 38 - 0.00000 - 409 225s 4014 32 0.00000 29 360 - 0.00000 - 410 230s 4115 27 infeasible 30 - 0.00000 - 410 235s 4216 30 infeasible 30 - 0.00000 - 410 240s 4316 34 0.00000 28 355 - 0.00000 - 410 245s 4416 38 infeasible 28 - 0.00000 - 410 250s 4507 41 infeasible 34 - 0.00000 - 411 255s 4596 36 infeasible 31 - 0.00000 - 412 260s 4683 33 0.00000 28 354 - 0.00000 - 413 265s 4780 38 0.00000 26 378 - 0.00000 - 413 270s 4873 43 infeasible 31 - 0.00000 - 414 275s 4978 34 0.00000 25 388 - 0.00000 - 413 280s Cutting planes: Gomory: 1 Clique: 12 Zero half: 9 Explored 4990 nodes (2124917 simplex iterations) in 280.58 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective -, best bound 0.000000000000e+00, gap - optimal solution found: number of colors: 6