[Gmsh] Gmsh aborted in the middle of 3D mesh

[C. D. Wang]

I tried to 3D mesh this simple cube when Gmsh was aborted suddenly. the
.gmsh-errors file said :

Info    : Mesh 2D complete (0.055991 s)
Info    : Mesh 3D...
Info    : Meshing volume 1000
Info    : CalcLocalH: 686 Points 0 Elements 1368 Surface Elements
Info    : Check subdomain 1 / 1
Info    : 1368 open elements
Fatal   : ERROR: Edge 1 - 9 multiple times in surface mesh
Info    : Writing log file '/home/cynthiaw/.gmsh-errors'

Can anyone please tell me what I did wrong? Thank you!

Cheers, Cynthia
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// Simple fault input

lcar = 0.1;
lcar2 = 0.08;

Point(0) = {0,0,0,lcar};
Point(1) = {1,0,0,lcar};
Point(2) = {1,1,0,lcar};
Point(3) = {0,1,0,lcar};

Point(4) = {0,0,1,lcar};
Point(5) = {1,0,1,lcar};
Point(6) = {1,1,1,lcar};
Point(7) = {0,1,1,lcar};

Point(10) = {0.2,0,0,lcar2};
Point(11) = {0.2,1,0,lcar2};
Point(12) = {0.2,1,1,lcar2};
Point(13) = {0.2,0,1,lcar2};

Line(50) = {0,1};
Line(51) = {1,2};
Line(52) = {2,3};
Line(53) = {3,0};
Line Loop(55) = {50,51,52,53};
Plane Surface(100) = {55};


Line(60) = {5,4};
Line(61) = {4,7};
Line(62) = {7,6};
Line(63) = {6,5};
Line Loop(65) = {60,61,62,63};
Plane Surface(101) = {65};
//Surface Loop(201) = {100};

Line(70) = {4,0};
Line(71) = {1,5};
Line(72) = {6,2};
Line(73) = {3,7};
Line Loop(75) = {50,71,60,70};
Plane Surface(102) = {75};

Line Loop(76) = {71,-63,72,-51};
Plane Surface(103) = {76};

Line Loop(77) = {52,73,62,72};
Plane Surface(104) = {77};

Line Loop(78) = {73,-61,70,-53};
Plane Surface(105) = {78};

Surface Loop(200)={100,103,101,105,-102,-104};

//Line(80) = {10,11};
//Line(81) = {11,12};
//Line(82) = {12,13};
//Line(83) = {13,10};
//Line Loop(85) = {80,81,82,83};
//Ruled Surface(106) = {85};
//Surface Loop(206) = {106};

//Physical Surface(150) = {106};


Volume(1000) = {200};