
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:52:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7534.40.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/grafo7534.40.lp
Reading time = 0.53 seconds
: 248445 rows, 2497 columns, 747646 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 248445 rows, 2497 columns and 747646 nonzeros
Model fingerprint: 0x622192bf
Variable types: 49 continuous, 2448 integer (2448 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, 5e+01]
Presolve removed 103088 rows and 4 columns
Presolve time: 1.98s
Presolved: 145357 rows, 2493 columns, 438722 nonzeros
Variable types: 0 continuous, 2493 integer (2444 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2489 rows, 147846 columns, 441215 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13555    1.0208050e+02   0.000000e+00   1.695558e+05      5s
   31572    5.6903381e+01   0.000000e+00   1.070687e+05     10s
   48680    5.2795524e+01   0.000000e+00   2.787709e+04     15s
   66768    5.2767379e+01   0.000000e+00   6.218541e+04     20s
   84856    5.2759862e+01   0.000000e+00   9.301001e+01     25s
   90665    5.3000000e+01   0.000000e+00   0.000000e+00     27s
   90665    5.3000000e+01   0.000000e+00   0.000000e+00     27s
   90665    5.3000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.300000e+01, 90665 iterations, 24.38 seconds (14.87 work units)

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

     0     0   53.00000    0 1316    7.00000   53.00000   657%     -   50s

Explored 1 nodes (102200 simplex iterations) in 50.06 seconds (37.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.300000000000e+01, gap 657.1429%

Wrote result file './lp_solutions/grafo7534.40.sol'

