
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:58:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6704.47.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/grafo6704.47.lp
Reading time = 0.31 seconds
: 175544 rows, 3138 columns, 529567 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 175544 rows, 3138 columns and 529567 nonzeros
Model fingerprint: 0x47744804
Variable types: 57 continuous, 3081 integer (3081 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 48536 rows and 13 columns
Presolve time: 1.38s
Presolved: 127008 rows, 3125 columns, 384444 nonzeros
Variable types: 0 continuous, 3125 integer (3068 binary)
Root relaxation presolved: 3110 rows, 130118 columns, 387569 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14188    6.6665605e+01   0.000000e+00   3.178752e+05      5s
   28063    5.6843661e+01   0.000000e+00   2.465553e+05     10s
   42497    5.6728322e+01   0.000000e+00   1.689599e+05     15s
   56329    5.6701049e+01   0.000000e+00   4.478776e+04     20s
   69629    5.6690605e+01   0.000000e+00   4.520862e+03     25s
   83461    5.6687300e+01   0.000000e+00   1.221726e+02     30s
   85610    5.7000000e+01   0.000000e+00   0.000000e+00     31s
   85610    5.7000000e+01   0.000000e+00   0.000000e+00     31s
   85610    5.7000000e+01   0.000000e+00   0.000000e+00     31s

Root relaxation: objective 5.700000e+01, 85610 iterations, 29.43 seconds (19.61 work units)

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

     0     0   57.00000    0 1603          -   57.00000      -     -   50s
H    0     0                       4.0000000   57.00000  1325%     -   50s

Explored 1 nodes (93428 simplex iterations) in 50.09 seconds (36.95 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.700000000000e+01, gap 1325.0000%

Wrote result file './lp_solutions/grafo6704.47.sol'

