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-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-sample2.opb
MD5SUMd28092793cdc5a919be9a0f5974c70fe
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 48000
Optimality of the best value was proved NO
Number of terms in the objective function 489
Biggest coefficient in the objective function 3145728
Number of bits for the biggest coefficient in the objective function 22
Sum of the numbers in the objective function 69282750
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 3145728
Number of bits of the biggest number in a constraint 22
Biggest sum of numbers in a constraint 69282750
Number of bits of the biggest sum of numbers27
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark10.6134
Number of variables873
Total number of constraints67
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)24
Number of constraints which are nor clauses,nor cardinality constraints43
Minimum length of a constraint1
Maximum length of a constraint100

Trace number 42807 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc2 THE 2005-06-16 15:31:45 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=26027 boxname=wulflinc2 idbench=1327 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  d28092793cdc5a919be9a0f5974c70fe  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-sample2.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-sample2.opb
IDLAUNCH: 26027
/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:        673904 kB
Buffers:         16604 kB
Cached:         321976 kB
SwapCached:       1420 kB
Active:          26568 kB
Inactive:       314068 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        673652 kB
SwapTotal:     2097136 kB
SwapFree:      2094720 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5056 kB
Slab:            14264 kB
Committed_AS:    71904 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 15:33:59 (client local time) WITH STATUS 1 IN 133.671 SECONDS
stats: 26027 7 133.671 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: 99137
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
c CONFLICT during preprocess 
c trying from 1536 to 2047

	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): 0.91 0.95 0.90 2/54 12706
Raw data (stat): 12706 (runsolver) R 12705 31399 31398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 971868677 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+10.0004 s]
Raw data (loadavg): 0.92 0.95 0.90 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 25686 0 0 0 942 57 0 0 25 0 1 0 971868677 84594688 14770 4294967295 134512640 135730672 3221224576 3221022184 135285983 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 20653 14770 301 301 0 20352 0
vsize: 82612
[startup+20.0002 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 49603 0 0 0 1890 109 0 0 25 0 1 0 971868677 153116672 27079 4294967295 134512640 135730672 3221224576 3221142964 135282202 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 37382 27079 301 301 0 37081 0
vsize: 149528
[startup+30.0012 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 76250 0 0 0 2840 159 0 0 25 0 1 0 971868677 262950912 53021 4294967295 134512640 135730672 3221224576 3221160176 134776110 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 64197 53021 301 301 0 63896 0
vsize: 256788
[startup+40.0007 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 98759 0 0 0 3789 210 0 0 25 0 1 0 971868677 301559808 51448 4294967295 134512640 135730672 3221224576 3221222880 134787414 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 73623 51448 301 301 0 73322 0
vsize: 294492
[startup+50.0013 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 111728 0 0 0 4757 242 0 0 25 0 1 0 971868677 330620928 64299 4294967295 134512640 135730672 3221224576 3221141436 135291214 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 80718 64299 301 301 0 80417 0
vsize: 322872
[startup+60.0015 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 125637 0 0 0 5728 271 0 0 25 0 1 0 971868677 345624576 77996 4294967295 134512640 135730672 3221224576 3221098832 134546483 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 84381 77996 301 301 0 84080 0
vsize: 337524
[startup+70.0022 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 160506 0 0 0 6659 340 0 0 25 0 1 0 971868677 462618624 93272 4294967295 134512640 135730672 3221224576 3221130636 134607999 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 112944 93272 301 301 0 112643 0
vsize: 451776
[startup+80.0024 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 195632 0 0 0 7585 414 0 0 25 0 1 0 971868677 578904064 102379 4294967295 134512640 135730672 3221224576 3221222612 134768817 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 141334 102379 301 301 0 141033 0
vsize: 565336
[startup+90.0026 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 205971 0 0 0 8560 439 0 0 25 0 1 0 971868677 607838208 109305 4294967295 134512640 135730672 3221224576 3221208900 135281112 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 148398 109305 301 301 0 148097 0
vsize: 593592
[startup+100.003 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 215387 0 0 0 9538 461 0 0 25 0 1 0 971868677 624615424 118508 4294967295 134512640 135730672 3221224576 3221167004 134608033 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 152494 118508 301 301 0 152193 0
vsize: 609976
[startup+110.004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 232175 0 0 0 10503 496 0 0 25 0 1 0 971868677 644079616 135055 4294967295 134512640 135730672 3221224576 3221162816 134786939 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 157246 135055 301 301 0 156945 0
vsize: 628984
[startup+120.004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 249266 0 0 0 11470 529 0 0 25 0 1 0 971868677 694792192 151930 4294967295 134512640 135730672 3221224576 3221131728 134549339 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 169627 151930 301 301 0 169326 0
vsize: 678508
[startup+130.005 s]
Raw data (loadavg): 0.99 0.96 0.91 2/54 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 258672 0 0 0 12448 551 0 0 25 0 1 0 971868677 612544512 140193 4294967295 134512640 135730672 3221224576 3221222432 134787220 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 149547 140193 301 301 0 149246 0
vsize: 598188
[startup+133.674 s]
Raw data (loadavg): 0.99 0.96 0.91 1/53 12706
Raw data (stat): 12706 (pb2sat-v2) R 12705 31399 31398 0 -1 0 258672 0 0 0 12448 551 0 0 25 0 1 0 971868677 612544512 140193 4294967295 134512640 135730672 3221224576 3221222432 134787220 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 149547 140193 301 301 0 149246 0
vsize: 0

Child status: 1
Real time (s): 133.673
CPU time (s): 133.671
CPU user time (s): 127.872
CPU system time (s): 5.79912
CPU usage (%): 99.9981
Max. virtual memory (Kb): 678508
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####