
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:36:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7609.42.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/grafo7609.42.lp
Reading time = 0.56 seconds
: 304565 rows, 3279 columns, 917070 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 304565 rows, 3279 columns and 917070 nonzeros
Model fingerprint: 0xe6d5a877
Variable types: 60 continuous, 3219 integer (3219 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]
Found heuristic solution: objective 4.0000000
Presolve removed 115699 rows and 23 columns
Presolve time: 2.66s
Presolved: 188866 rows, 3256 columns, 570579 nonzeros
Variable types: 0 continuous, 3256 integer (3196 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3250 rows, 192116 columns, 573835 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    5890    1.6523243e+02   0.000000e+00   4.766330e+07      5s
   23443    9.6180790e+01   0.000000e+00   1.444782e+06     11s
   34421    7.6989719e+01   0.000000e+00   3.833375e+05     15s
   47002    7.3881811e+01   0.000000e+00   6.039325e+05     20s
   59725    7.2797967e+01   0.000000e+00   9.661244e+04     25s
   72322    7.2757604e+01   0.000000e+00   2.982383e+04     30s
   84919    7.2737527e+01   0.000000e+00   1.990598e+04     35s
   96775    7.2727378e+01   0.000000e+00   1.331089e+04     40s
  107890    7.2721632e+01   0.000000e+00   1.648885e+04     45s

Root relaxation: time limit, 119493 iterations, 46.96 seconds (28.73 work units)

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

     0     0          -    0         9.00000  424.00000  4611%     -   50s

Explored 1 nodes (119493 simplex iterations) in 50.03 seconds (31.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 4 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.240000000000e+02, gap 4611.1111%

Wrote result file './lp_solutions/grafo7609.42.sol'

