********** ** 1 **SET PRINT 0 ********** ********** ** 2 **SET NOGRAD ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 frac0 3.33333e-01 1.00000e-02 no limits 2 frac1 3.33333e-01 1.00000e-02 no limits 3 frac2 3.33333e-01 1.00000e-02 no limits ********** ** 3 **SET ERR 0.5 ********** ********** ** 4 **SET PRINT 0 ********** ********** ** 5 **SET STR 1 ********** ********** ** 6 **MIGRAD 1345 0.01 ********** MINUIT WARNING IN MIGRAD ============== Negative diagonal element 1 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 2 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 3 in Error Matrix MINUIT WARNING IN MIGRAD ============== 1.01212 added to diagonal of error matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 1 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 2 in Error Matrix MINUIT WARNING IN MIGRAD ============== 73.1126 added to diagonal of error matrix EIGENVALUES OF SECOND-DERIVATIVE MATRIX: -7.8377e-01 1.0008e+00 2.7829e+00 MINUIT WARNING IN MIGRAD ============== MATRIX FORCED POS-DEF BY ADDING 0.786552 TO DIAGONAL. MINUIT WARNING IN MIGRAD ============== Negative diagonal element 1 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 2 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 3 in Error Matrix MINUIT WARNING IN MIGRAD ============== 2.96529e+10 added to diagonal of error matrix EIGENVALUES OF SECOND-DERIVATIVE MATRIX: -2.7242e+05 1.0234e+00 2.7243e+05 MINUIT WARNING IN MIGRAD ============== MATRIX FORCED POS-DEF BY ADDING 272695.994603 TO DIAGONAL. MINUIT WARNING IN MIGRAD ============== Negative diagonal element 1 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 2 in Error Matrix MINUIT WARNING IN MIGRAD ============== Negative diagonal element 3 in Error Matrix MINUIT WARNING IN MIGRAD ============== 8.52608e+13 added to diagonal of error matrix EIGENVALUES OF SECOND-DERIVATIVE MATRIX: -1.0137e+06 1.0010e+00 1.0137e+06 MINUIT WARNING IN MIGRAD ============== MATRIX FORCED POS-DEF BY ADDING 1014707.564831 TO DIAGONAL. MIGRAD TERMINATED WITHOUT CONVERGENCE. FCN=-1.68808e+24 FROM MIGRAD STATUS=FAILED 188 CALLS 189 TOTAL EDM=8.03338e+24 STRATEGY= 1 ERROR MATRIX UNCERTAINTY 29.1 per cent EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 frac0 -5.55788e+18 7.12288e+02 0.00000e+00 -1.29296e+07 2 frac1 1.29076e+17 6.57527e+09 0.00000e+00 -2.07319e+07 3 frac2 5.91961e+17 6.53950e+09 0.00000e+00 -1.19726e+08 ERR DEF= 0.5 Warning in : Abnormal termination of minimization. fit status: 4 Info in : png file Simulazione/Rea0611-MC6998-MC6997-BIB0735-Fitter_GePD.png has been created *** Break *** segmentation violation =========================================================== There was a crash. This is the entire stack trace of all threads: =========================================================== #0 0x00007f786ea73dbc in waitpid () from /lib64/libc.so.6 #1 0x00007f786e9f6cc2 in do_system () from /lib64/libc.so.6 #2 0x00007f786fb8539c in TUnixSystem::StackTrace() () from /nfs/luna02/ROOT/root-6.24.06-install/lib/libCore.so #3 0x00007f786fb829a5 in TUnixSystem::DispatchSignals(ESignals) () from /nfs/luna02/ROOT/root-6.24.06-install/lib/libCore.so #4 #5 0x00007f78703fa3ab in ?? () #6 0x0000000000000000 in ?? () =========================================================== The lines below might hint at the cause of the crash. You may get help by asking at the ROOT forum https://root.cern.ch/forum Only if you are really convinced it is a bug in ROOT then please submit a report at https://root.cern.ch/bugs Please post the ENTIRE stack trace from above as an attachment in addition to anything else that might help us fixing this issue. =========================================================== #5 0x00007f78703fa3ab in ?? () #6 0x0000000000000000 in ?? () =========================================================== Root >