I am sorry for reposting. I changed the listing print out to 1. after the 4th iteration it stops without any error:
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ITERATION 3 TIME 0 D 0 H 0 MN 30.0000 S ( 30.0000 S)
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VALUE OF THE TRACER 1 AT THE BOUNDARIES READ IN THE ASCII FILE
T
SOURCE POINT 1 PUT ON PLANE 1
LOCATED AT 1.9300651550291370E-003 METRES
SOURCE POINT 2 PUT ON PLANE 1
LOCATED AT 4.4203376770020064E-003 METRES
ADVECTION-DIFFUSION OF VELOCITIES STEP
ADVECTION-DIFFUSION OF VELOCITIES STEP
PROPAGATION AND DIFFUSION WITH WAVE EQUATION
PROPAGATION AND DIFFUSION WITH WAVE EQUATION
GRACJG (BIEF) : 4 ITERATIONS, RELATIVE PRECISION: 0.1064677E-10
POSITIVE DEPTHS OBTAINED IN 1 ITERATIONS
CALCULATION OF VERTICAL VELOCITY STEP
CALCULATION OF VERTICAL VELOCITY STEP
ADVECTION-DIFFUSION OF TRACERS
ADVECTION-DIFFUSION OF TRACERS
MURD3D_POS SCHEME: 14 10 ITERATIONS
DIFFUSION OF TRN1
GRACJG (BIEF) : 1 ITERATIONS, RELATIVE PRECISION: 0.8987938E-19
MURD3D_POS SCHEME: 14 10 ITERATIONS
DIFFUSION OF TRN2
GRACJG (BIEF) : 1 ITERATIONS, RELATIVE PRECISION: 0.6583543E-14
MURD3D_POS SCHEME: 14 10 ITERATIONS
DIFFUSION OF TRN3
GRACJG (BIEF) : SOLUTION X=0 BECAUSE L2-NORM OF B VERY SMALL: 0.000000
MASS BALANCE
MASS BALANCE
WATER
MASS AT THE PREVIOUS TIME STEP : 0.1447409E+12
MASS AT THE PRESENT TIME STEP : 0.1447428E+12
MASS LEAVING THE DOMAIN DURING THIS TIME STEP : -1924232.
ERROR ON THE MASS DURING THIS TIME STEP : -0.4820258E-03
FLUX BOUNDARY 1: 192381.2 M3/S ( >0 : ENTERING <0 : EXITING )
TRACER 1: TEMPERATURE , UNIT : C * M3)
ADVECTIVE FLUX THROUGH BOUNDARIES OR SOURCES : -2886557.
DIFFUSIVE FLUX THROUGH THE BOUNDARIES : -0.8079370E+21
MASS AT THE PREVIOUS TIME STEP : 0.5441694E+13
MASS AT THE PRESENT TIME STEP : 0.8059768E+22
MASS EXITING (BOUNDARIES OR SOURCE) : -0.8079370E+22
ERROR ON THE MASS DURING THIS TIME STEP : 0.1960200E+20
TRACER 2: SALINITY , UNIT : G/L * M3)
ADVECTIVE FLUX THROUGH BOUNDARIES OR SOURCES : -5386672.
DIFFUSIVE FLUX THROUGH THE BOUNDARIES : -0.000000
MASS AT THE PREVIOUS TIME STEP : 0.4052745E+13
MASS AT THE PRESENT TIME STEP : 0.4052799E+13
MASS EXITING (BOUNDARIES OR SOURCE) : -0.5386672E+08
ERROR ON THE MASS DURING THIS TIME STEP : 0.4813865E-02
TRACER 3: CONCENTRATION , UNIT : % * M3)
ADVECTIVE FLUX THROUGH BOUNDARIES OR SOURCES : 0.000000
DIFFUSIVE FLUX THROUGH THE BOUNDARIES : -0.000000
MASS AT THE PREVIOUS TIME STEP : 0.000000
MASS AT THE PRESENT TIME STEP : 0.000000
MASS EXITING (BOUNDARIES OR SOURCE) : 0.000000
ERROR ON THE MASS DURING THIS TIME STEP : 0.000000
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ITERATION 4 TIME 0 D 0 H 0 MN 40.0000 S ( 40.0000 S)
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VALUE OF THE TRACER 1 AT THE BOUNDARIES READ IN THE ASCII FILE
T
SOURCE POINT 1 PUT ON PLANE 1
LOCATED AT 1.9300651550291370E-003 METRES
SOURCE POINT 2 PUT ON PLANE 1
LOCATED AT 4.4203376770020064E-003 METRES
ADVECTION-DIFFUSION OF VELOCITIES STEP
ADVECTION-DIFFUSION OF VELOCITIES STEP
PROPAGATION AND DIFFUSION WITH WAVE EQUATION
PROPAGATION AND DIFFUSION WITH WAVE EQUATION
GRACJG (BIEF) : 42 ITERATIONS, RELATIVE PRECISION: 0.9845686E-06
POSITIVE DEPTHS OBTAINED IN 1 ITERATIONS
CALCULATION OF VERTICAL VELOCITY STEP
CALCULATION OF VERTICAL VELOCITY STEP