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/MIPLIB/miplib/normalized-mps-v2-20-10-air01.opb
MD5SUM90db1995bd949fc5ac74143a523f3bcf
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3398
Optimality of the best value was proved NO
Number of terms in the objective function 771
Biggest coefficient in the objective function 3698
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 1192753
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 3698
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 1192753
Number of bits of the biggest sum of numbers21
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.03384
Number of variables771
Total number of constraints794
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)794
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint438

Trace number 42378 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc2 THE 2005-06-16 06:13:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25594 boxname=wulflinc2 idbench=894 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  90db1995bd949fc5ac74143a523f3bcf  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-air01.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-air01.opb
IDLAUNCH: 25594
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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		: 451.191
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:        709876 kB
Buffers:         34800 kB
Cached:         264712 kB
SwapCached:       4448 kB
Active:          61344 kB
Inactive:       243240 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        709624 kB
SwapTotal:     2097136 kB
SwapFree:      2091696 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5056 kB
Slab:            14604 kB
Committed_AS:    71900 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 06:15:33 (client local time) WITH STATUS 1 IN 125.984 SECONDS
stats: 25594 7 125.984 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 4827
c big objective detected
c trying from 0 to 511
c CONFLICT during preprocess 
c trying from 512 to 1023
c CONFLICT during preprocess 
c trying from 1024 to 1535

	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
Raw data (loadavg): 0.91 0.95 0.90 2/54 6065
Raw data (stat): 6065 (runsolver) R 6064 31399 31398 0 -1 64 6 0 0 0 0 0 0 0 19 0 1 0 968518360 884736 93 4294967295 134512640 135332820 3221224464 3221219440 134864522 0 0 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 864
Current StackSize limit: 67108864 bytes
[startup+9.99982 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 27625 0 0 0 943 56 0 0 25 0 1 0 968518360 87912448 16582 4294967295 134512640 135730672 3221224576 3220967136 135284048 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21463 16582 301 301 0 21162 0
vsize: 85852
[startup+20.0007 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 54882 0 0 0 1886 113 0 0 25 0 1 0 968518360 161599488 31867 4294967295 134512640 135730672 3221224576 3221222880 134787414 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 39453 31867 301 301 0 39152 0
vsize: 157812
[startup+30.0004 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 66836 0 0 0 2859 139 0 0 25 0 1 0 968518360 255885312 43600 4294967295 134512640 135730672 3221224576 3221090112 134775432 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 62472 43600 301 301 0 62171 0
vsize: 249888
[startup+40.0031 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 96940 0 0 0 3797 202 0 0 25 0 1 0 968518360 283877376 51594 4294967295 134512640 135730672 3221224576 3221197200 134546483 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 69306 51594 301 301 0 69005 0
vsize: 277224
[startup+50.0038 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 114596 0 0 0 4758 241 0 0 25 0 1 0 968518360 330272768 69014 4294967295 134512640 135730672 3221224576 3220937424 134610850 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 80633 69014 301 301 0 80332 0
vsize: 322532
[startup+60.0036 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 152082 0 0 0 5690 309 0 0 25 0 1 0 968518360 451997696 86905 4294967295 134512640 135730672 3221224576 3221201428 134612535 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 110351 86905 301 301 0 110050 0
vsize: 441404
[startup+70.0034 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 161840 0 0 0 6669 330 0 0 25 0 1 0 968518360 460447744 93021 4294967295 134512640 135730672 3221224576 3221222616 135284357 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 112414 93021 301 301 0 112113 0
vsize: 449656
[startup+80.0041 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 171683 0 0 0 7645 355 0 0 25 0 1 0 968518360 495996928 102835 4294967295 134512640 135730672 3221224576 3221152528 135301585 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 121093 102835 301 301 0 120792 0
vsize: 484372
[startup+90.0048 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 204263 0 0 0 8577 423 0 0 25 0 1 0 968518360 596660224 110622 4294967295 134512640 135730672 3221224576 3220997620 135292592 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 145669 110622 301 301 0 145368 0
vsize: 582676
[startup+100.005 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 216712 0 0 0 9551 449 0 0 25 0 1 0 968518360 609636352 122823 4294967295 134512640 135730672 3221224576 3221189644 135301632 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 148837 122823 301 301 0 148536 0
vsize: 595348
[startup+110.004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 232602 0 0 0 10520 480 0 0 25 0 1 0 968518360 637616128 138475 4294967295 134512640 135730672 3221224576 3220924304 134743120 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 155668 138475 301 301 0 155367 0
vsize: 622672
[startup+120.005 s]
Raw data (loadavg): 0.99 0.96 0.91 2/54 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 244576 0 0 0 11498 502 0 0 25 0 1 0 968518360 674230272 150292 4294967295 134512640 135730672 3221224576 3221223040 134736337 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 164607 150292 301 301 0 164306 0
vsize: 658428
[startup+125.981 s]
Raw data (loadavg): 0.99 0.96 0.91 1/53 6065
Raw data (stat): 6065 (pb2sat-v2) R 6064 31399 31398 0 -1 0 244576 0 0 0 11498 502 0 0 25 0 1 0 968518360 674230272 150292 4294967295 134512640 135730672 3221224576 3221223040 134736337 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 164607 150292 301 301 0 164306 0
vsize: 0

Child status: 1
Real time (s): 125.981
CPU time (s): 125.984
CPU user time (s): 120.661
CPU system time (s): 5.32319
CPU usage (%): 100.002
Max. virtual memory (Kb): 658428
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####