Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided in four parts:
  1. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provide some useful information on the computer.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
  3. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to 1200 seconds. After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  4. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.

General information on the benchmark

Namenormalized-opb/mps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-stair.opb
MD5SUMf2a6dc8d2697a7f5959c84e4079088c9
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 528959045369856
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 3702118998041541
Number of bits of the biggest sum of numbers52
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.506922
Number of variables11454
Total number of constraints362
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints362
Minimum length of a constraint13
Maximum length of a constraint810

Trace number 42366 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-06-16 06:08:20 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25585 boxname=wulflinc6 idbench=885 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  f2a6dc8d2697a7f5959c84e4079088c9  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-stair.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-stair.opb
IDLAUNCH: 25585
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        686776 kB
Buffers:         34304 kB
Cached:         290456 kB
SwapCached:       1028 kB
Active:          40284 kB
Inactive:       286676 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        686524 kB
SwapTotal:     2097136 kB
SwapFree:      2095200 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5088 kB
Slab:            15208 kB
Committed_AS:    63844 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 06:10:21 (client local time) WITH STATUS 1 IN 120.824 SECONDS
stats: 25585 7 120.824 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.85 0.97 0.91 2/54 14910
Raw data (stat): 14910 (runsolver) R 14909 25568 25567 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 968482751 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.001 s]
Raw data (loadavg): 0.87 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 28485 0 0 0 943 56 0 0 25 0 1 0 968482751 87977984 17361 4294967295 134512640 135730672 3221224576 3221060748 134608033 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 21479 17361 301 301 0 21178 0
vsize: 85916
[startup+20.0013 s]
Raw data (loadavg): 0.89 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 55512 0 0 0 1887 113 0 0 25 0 1 0 968482751 172191744 33190 4294967295 134512640 135730672 3221224576 3221066720 134769951 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 42039 33190 301 301 0 41738 0
vsize: 168156
[startup+30.0018 s]
Raw data (loadavg): 0.91 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 95534 0 0 0 2807 193 0 0 25 0 1 0 968482751 298532864 51035 4294967295 134512640 135730672 3221224576 3221068160 134786278 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 72884 51035 301 301 0 72583 0
vsize: 291536
[startup+40.002 s]
Raw data (loadavg): 0.92 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 108601 0 0 0 3782 218 0 0 25 0 1 0 968482751 339144704 63896 4294967295 134512640 135730672 3221224576 3221069688 135285983 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 82799 63896 301 301 0 82498 0
vsize: 331196
[startup+50.0018 s]
Raw data (loadavg): 0.93 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 127387 0 0 0 4750 251 0 0 25 0 1 0 968482751 366649344 82464 4294967295 134512640 135730672 3221224576 3221068208 134770759 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 89514 82464 301 301 0 89213 0
vsize: 358056
[startup+60.0023 s]
Raw data (loadavg): 0.94 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 173446 0 0 0 5666 335 0 0 25 0 1 0 968482751 696496128 108961 4294967295 134512640 135730672 3221224576 3221068336 134788521 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 170043 108966 301 301 0 169742 0
vsize: 680172
[startup+70.0028 s]
Raw data (loadavg): 0.95 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 199070 0 0 0 6610 392 0 0 25 0 1 0 968482751 629383168 109845 4294967295 134512640 135730672 3221224576 3221072256 134784086 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 153658 109845 301 301 0 153357 0
vsize: 614632
[startup+80.0032 s]
Raw data (loadavg): 0.96 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 212461 0 0 0 7586 416 0 0 25 0 1 0 968482751 636276736 123024 4294967295 134512640 135730672 3221224576 3221075584 134786278 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 155341 123024 301 301 0 155040 0
vsize: 621364
[startup+90.0037 s]
Raw data (loadavg): 0.96 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 230681 0 0 0 8552 450 0 0 25 0 1 0 968482751 663232512 141032 4294967295 134512640 135730672 3221224576 3221071544 134787727 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 161922 141032 301 301 0 161621 0
vsize: 647688
[startup+100.004 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 247248 0 0 0 9518 484 0 0 25 0 1 0 968482751 737751040 157406 4294967295 134512640 135730672 3221224576 3221072720 134783984 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 180115 157406 301 301 0 179814 0
vsize: 720460
[startup+110.004 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 263056 0 0 0 10488 514 0 0 25 0 1 0 968482751 760635392 173029 4294967295 134512640 135730672 3221224576 3221070528 134546483 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 185702 173029 301 301 0 185401 0
vsize: 742808
[startup+120.005 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 263565 0 0 0 11473 529 0 0 25 0 1 0 968482751 401637376 97581 4294967295 134512640 135730672 3221224576 3221222832 135282716 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 98056 97581 301 301 0 97755 0
vsize: 392224
[startup+120.798 s]
Raw data (loadavg): 0.98 0.97 0.91 1/53 14910
Raw data (stat): 14910 (pb2sat-v2) R 14909 25568 25567 0 -1 0 263565 0 0 0 11473 529 0 0 25 0 1 0 968482751 401637376 97581 4294967295 134512640 135730672 3221224576 3221222832 135282716 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 98056 97581 301 301 0 97755 0
vsize: 0

Child status: 1
Real time (s): 120.798
CPU time (s): 120.824
CPU user time (s): 115.316
CPU system time (s): 5.50716
CPU usage (%): 100.021
Max. virtual memory (Kb): 742808
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####