
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:54:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1963.42.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/grafo1963.42.lp
Reading time = 0.53 seconds
: 330528 rows, 3176 columns, 994734 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 330528 rows, 3176 columns and 994734 nonzeros
Model fingerprint: 0xc2269587
Variable types: 58 continuous, 3118 integer (3118 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 -0.0000000
Presolve removed 134637 rows and 3 columns
Presolve time: 2.00s
Presolved: 195891 rows, 3173 columns, 591391 nonzeros
Variable types: 0 continuous, 3173 integer (3115 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 3140 rows, 199031 columns, 594564 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13733    1.4197971e+02   0.000000e+00   6.107337e+05      5s
   32801    8.8913647e+01   0.000000e+00   2.741483e+06     10s
   48471    7.8837880e+01   0.000000e+00   3.551333e+05     15s
   64714    7.1765902e+01   0.000000e+00   1.075369e+05     20s
   81479    7.1729048e+01   0.000000e+00   4.282689e+04     25s
   97439    7.1712932e+01   0.000000e+00   2.411666e+04     30s
  114197    7.1703772e+01   0.000000e+00   6.499550e+03     35s
  130157    7.1699496e+01   0.000000e+00   6.244841e+03     40s
  147713    7.1697501e+01   0.000000e+00   2.558764e+02     45s
  156182    7.2000000e+01   0.000000e+00   0.000000e+00     48s
  156182    7.2000000e+01   0.000000e+00   0.000000e+00     48s
  156182    7.2000000e+01   0.000000e+00   0.000000e+00     48s

Root relaxation: objective 7.200000e+01, 156182 iterations, 45.52 seconds (35.48 work units)

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

     0     0   72.00000    0 1869   12.00000   72.00000   500%     -   50s

Explored 1 nodes (156525 simplex iterations) in 50.06 seconds (40.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 7.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo1963.42.sol'

