[Bug-glpk] [Fwd: Exception raised in GLPK-Java when deleting a problem]

[Andrew Makhorin]

-------- Forwarded Message --------
From: Sergio Torassa <address@hidden>
To: address@hidden
Subject: Exception raised in GLPK-Java when deleting a problem
Date: Tue, 7 Nov 2017 10:00:52 +0100

In case of problems more complex than a given threshold, an
EXCEPTION_ACCESS_VIOLATION is raised by the Java Virtual Machine during
the deletion of a solved problem.


Code in the following. 
data is a table of <ArrayList<ArrayList<String>> and data.get(i).get(0)
gives the value to add to the value array.
The crash is raised when data.size() is higher than 6


SO: Windows 7 64bit SP1
Processor: Intel(R) Core(TM) i5 CPU, M540 @ 2.53GHz
RAM: 6 GB






                                glp_prob lp;
SWIGTYPE_p_int ind;
SWIGTYPE_p_double val;
int ret;


try {
// Create problem
lp = GLPK.glp_create_prob();
System.out.println(" Problem   created ");
GLPK.glp_set_prob_name(lp, " myProblem ");


// Define columns
GLPK.glp_add_cols(lp, data.size());


for (int i = 0; i < data.size(); i++) {
GLPK.glp_set_col_name(lp, i + 1, "x" + (i + 1));
GLPK.glp_set_col_kind(lp, i + 1, GLPKConstants.GLP_IV);
GLPK.glp_set_col_bnds(lp, i + 1, GLPKConstants.GLP_DB, 0, 1);
}


// Create constraints
GLPK.glp_add_rows(lp, 1);
GLPK.glp_set_row_name(lp, 1, "power");
GLPK.glp_set_row_bnds(lp, 1, GLPKConstants.GLP_LO, power, 0);


// Create and fill in index and value arrays
ind = GLPK.new_intArray(data.size());
val = GLPK.new_doubleArray(data.size());
for (int i = 0; i < data.size(); i++) {
GLPK.intArray_setitem(ind, i + 1, i + 1);
GLPK.doubleArray_setitem(val, i + 1,
Double.parseDouble(data.get(i).get(0)));
}


// set the row and delete the index and value arrays
GLPK.glp_set_mat_row(lp, 1, data.size(), ind, val);
GLPK.delete_intArray(ind);
GLPK.delete_doubleArray(val);


// Define objective
GLPK.glp_set_obj_name(lp, "z");
GLPK.glp_set_obj_dir(lp, GLPKConstants.GLP_MIN);
GLPK.glp_set_obj_coef(lp, 0, 0);
for (int i = 0; i < data.size(); i++) {
GLPK.glp_set_obj_coef(lp, i + 1,
Double.parseDouble(data.get(i).get(0)));
}


// Solve model
glp_smcp smcpParm = new glp_smcp();
GLPK.glp_init_smcp(smcpParm);
GLPK.glp_simplex(lp, smcpParm);


glp_iocp iocpParm = new glp_iocp();
iocpParm.setPresolve(GLPK.GLP_ON);
GLPK.glp_init_iocp(iocpParm);
ret = GLPK.glp_intopt(lp, iocpParm);

// Retrieve solution
if (ret == 0) {
// write_lp_solution(lp);
for (int i = 0; i < data.size(); i++) {
data.get(i).set(3, GLPK.glp_mip_col_val(lp, i + 1) == 1.0 ? "true" :
"false");
reducedPower = (int)GLPK.glp_mip_obj_val(lp);
}
} else {
System.out.println("The   problem   could  not  be  solved ");
}

// Free memory
GLPK.glp_delete_prob(lp);

} catch (GlpkException ex) {
ex.printStackTrace();
}


void write_lp_solution(glp_prob lp) {
int i, n;
String name;
double val;


name = GLPK.glp_get_obj_name(lp);
val = GLPK.glp_get_obj_val(lp);


System.out.print(name);
System.out.print(" = ");
System.out.println(val);


n = GLPK.glp_get_num_cols(lp);


for (i = 1; i <= n; i++) {


name = GLPK.glp_get_col_name(lp, i);
val = GLPK.glp_mip_col_val(lp, i);


System.out.print(name);
System.out.print(" = ");
System.out.println(val);
}
}


In the following the text output by the application


 Problem   created 
GLPK Simplex Optimizer, v4.63
1 row, 7 columns, 7 non-zeros
      0: obj =   0.000000000e+00 inf =   1.212e+03 (1)
      2: obj =   1.212000000e+03 inf =   0.000e+00 (0)
OPTIMAL LP SOLUTION FOUND
GLPK Integer Optimizer, v4.63
1 row, 7 columns, 7 non-zeros
7 integer variables, all of which are binary
Integer optimization begins...
+     2: mip =     not found yet >=              -inf        (1; 0)
Solution found by heuristic: 1220
+     9: mip =   1.220000000e+03 >=     tree is empty   0.0% (0; 9)
INTEGER OPTIMAL SOLUTION FOUND
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000077aef23c,
pid=4140, tid=0x00000000000009bc
#
# JRE version: Java(TM) SE Runtime Environment (8.0_151-b12) (build
1.8.0_151-b12)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.151-b12 mixed mode
windows-amd64 compressed oops)
# Problematic frame:
# C  [ntdll.dll+0x4f23c]
#
# Failed to write core dump. Minidumps are not enabled by default on
client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\sergio.torassa\workspace\DispatchSim\hs_err_pid4140.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#




Attached the log of the crash

hs_err_pid4140.log
Description: Binary data