
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:47:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7490.48.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo7490.48.lp
Reading time = 0.42 seconds
: 228720 rows, 3719 columns, 689904 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 228720 rows, 3719 columns and 689904 nonzeros
Model fingerprint: 0x62ddea1d
Variable types: 64 continuous, 3655 integer (3655 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 6e+01]
Presolve removed 61642 rows and 2 columns
Presolve time: 1.82s
Presolved: 167078 rows, 3717 columns, 505452 nonzeros
Variable types: 0 continuous, 3717 integer (3653 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3690 rows, 170768 columns, 509169 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10714    1.2417877e+02   0.000000e+00   3.340815e+06      5s
   22428    9.3509307e+01   0.000000e+00   5.728961e+05     10s
   32774    7.4548737e+01   0.000000e+00   6.746499e+05     15s
   43607    7.3492025e+01   0.000000e+00   1.083292e+05     20s
   53226    7.3467855e+01   0.000000e+00   1.124096e+05     25s
   63977    7.3448674e+01   0.000000e+00   3.003808e+05     30s
   73667    7.3437004e+01   0.000000e+00   7.020860e+04     35s
   83300    7.3428901e+01   0.000000e+00   7.678543e+04     40s
   92662    7.3423396e+01   0.000000e+00   1.157811e+05     45s

Root relaxation: time limit, 102144 iterations, 47.73 seconds (26.05 work units)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0          -    0         8.00000  359.00000  4388%     -   50s

Explored 1 nodes (102144 simplex iterations) in 50.03 seconds (27.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.590000000000e+02, gap 4387.5000%

Wrote result file './lp_solutions/grafo7490.48.sol'

