
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:26:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6256.41.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/grafo6256.41.lp
Reading time = 0.23 seconds
: 142848 rows, 2415 columns, 430701 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 142848 rows, 2415 columns and 430701 nonzeros
Model fingerprint: 0x83520799
Variable types: 49 continuous, 2366 integer (2366 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 46975 rows and 8 columns
Presolve time: 0.91s
Presolved: 95873 rows, 2407 columns, 290065 nonzeros
Variable types: 0 continuous, 2407 integer (2358 binary)
Root relaxation presolved: 2395 rows, 98268 columns, 292472 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21944    5.4950582e+01   0.000000e+00   4.151500e+04      5s
   44182    5.4922886e+01   0.000000e+00   2.566457e+04     10s
   66786    5.4914887e+01   0.000000e+00   6.697060e+03     15s
   89378    5.4911628e+01   0.000000e+00   3.810143e+02     20s
  105431    5.5000000e+01   0.000000e+00   0.000000e+00     24s
  105431    5.5000000e+01   0.000000e+00   0.000000e+00     24s
  105431    5.5000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 5.500000e+01, 105431 iterations, 22.63 seconds (18.54 work units)
Total elapsed time = 46.27s (DegenMoves)

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

     0     0   55.00000    0  732          -   55.00000      -     -   49s
H    0     0                       7.0000000   55.00000   686%     -   49s

Explored 1 nodes (122742 simplex iterations) in 50.04 seconds (48.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.500000000000e+01, gap 685.7143%

Wrote result file './lp_solutions/grafo6256.41.sol'

