
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:57:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3207.42.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/grafo3207.42.lp
Reading time = 0.53 seconds
: 274801 rows, 2653 columns, 826835 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 274801 rows, 2653 columns and 826835 nonzeros
Model fingerprint: 0xd0aba86e
Variable types: 51 continuous, 2602 integer (2602 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 115230 rows and 20 columns
Presolve time: 2.53s
Presolved: 159571 rows, 2633 columns, 481602 nonzeros
Variable types: 0 continuous, 2633 integer (2582 binary)
Root relaxation presolved: 2627 rows, 162198 columns, 484235 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7752    1.1940155e+02   0.000000e+00   9.694391e+05      5s
   27291    6.8947802e+01   0.000000e+00   1.642688e+05     10s
   42981    5.3842150e+01   0.000000e+00   8.587104e+04     15s
   59115    5.3789926e+01   0.000000e+00   6.429730e+03     20s
   75215    5.3772600e+01   0.000000e+00   4.068021e+04     25s
   91315    5.3767110e+01   0.000000e+00   6.781498e+02     30s
   99035    5.4000000e+01   0.000000e+00   0.000000e+00     33s
   99035    5.4000000e+01   0.000000e+00   0.000000e+00     33s
   99035    5.4000000e+01   0.000000e+00   0.000000e+00     33s

Root relaxation: objective 5.400000e+01, 99035 iterations, 29.84 seconds (18.06 work units)

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

     0     0   54.00000    0 1449          -   54.00000      -     -   50s
H    0     0                       4.0000000   54.00000  1250%     -   50s

Explored 1 nodes (106802 simplex iterations) in 50.07 seconds (34.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.400000000000e+01, gap 1250.0000%

Wrote result file './lp_solutions/grafo3207.42.sol'

