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-bell4.opb
MD5SUM3cce8c056d32fd25c784b4e9cbdd2db6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2147483647
Optimality of the best value was proved NO
Number of terms in the objective function 1527
Biggest coefficient in the objective function 4949278720000000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 114314457147588882
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 4949278720000000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 114314457147588882
Number of bits of the biggest sum of numbers57
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1226.37
Number of variables1996
Total number of constraints169
Number of constraints which are clauses18
Number of constraints which are cardinality constraints (but not clauses)34
Number of constraints which are nor clauses,nor cardinality constraints117
Minimum length of a constraint1
Maximum length of a constraint135

Trace number 42384 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc3 THE 2005-06-16 06:17:33 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25602 boxname=wulflinc3 idbench=902 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  3cce8c056d32fd25c784b4e9cbdd2db6  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-bell4.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-bell4.opb
IDLAUNCH: 25602
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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:        729708 kB
Buffers:         23536 kB
Cached:         259544 kB
SwapCached:        820 kB
Active:          29192 kB
Inactive:       256092 kB
HighTotal:      131008 kB
HighFree:         5544 kB
LowTotal:       903652 kB
LowFree:        724164 kB
SwapTotal:     2097136 kB
SwapFree:      2095340 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5104 kB
Slab:            13964 kB
Committed_AS:    71900 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 06:19:48 (client local time) WITH STATUS 1 IN 134.428 SECONDS
stats: 25602 7 134.428 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: 6297426774280722
c big objective detected
c trying from 0 to 511
c CONFLICT during preprocess 
c trying from 512 to 1023

	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): 0.84 0.92 0.90 1/54 18281
Raw data (stat): 18281 (runsolver) R 18280 20224 20223 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 968529893 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+10.0011 s]
Raw data (loadavg): 0.86 0.92 0.90 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 26019 0 0 0 940 59 0 0 25 0 1 0 968529893 77565952 14977 4294967295 134512640 135730672 3221224576 3221200348 134776215 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 18937 14977 301 301 0 18636 0
vsize: 75748
[startup+20.0024 s]
Raw data (loadavg): 0.89 0.93 0.90 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 50485 0 0 0 1890 109 0 0 25 0 1 0 968529893 150986752 28479 4294967295 134512640 135730672 3221224576 3221200864 134786638 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 36862 28480 301 301 0 36561 0
vsize: 147448
[startup+30.0038 s]
Raw data (loadavg): 0.90 0.93 0.90 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 87317 0 0 0 2819 181 0 0 25 0 1 0 968529893 263192576 43626 4294967295 134512640 135730672 3221224576 3221206016 134546483 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 64256 43626 301 301 0 63955 0
vsize: 257024
[startup+40.0037 s]
Raw data (loadavg): 0.92 0.93 0.90 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 99799 0 0 0 3791 209 0 0 25 0 1 0 968529893 298639360 55866 4294967295 134512640 135730672 3221224576 3221196168 134770094 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72910 55866 301 301 0 72609 0
vsize: 291640
[startup+50.0041 s]
Raw data (loadavg): 0.93 0.93 0.90 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 111597 0 0 0 4765 234 0 0 25 0 1 0 968529893 324034560 65726 4294967295 134512640 135730672 3221224576 3221223072 134747543 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 79110 65726 301 301 0 78809 0
vsize: 316440
[startup+60.0045 s]
Raw data (loadavg): 0.94 0.93 0.90 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 116242 0 0 0 5753 246 0 0 25 0 1 0 968529893 331296768 70242 4294967295 134512640 135730672 3221224576 3220994136 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 80883 70242 301 301 0 80582 0
vsize: 323532
[startup+70.0053 s]
Raw data (loadavg): 0.95 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 153495 0 0 0 6681 318 0 0 25 0 1 0 968529893 457797632 88926 4294967295 134512640 135730672 3221224576 3221040704 135109367 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 111767 88926 301 301 0 111466 0
vsize: 447068
[startup+80.0057 s]
Raw data (loadavg): 0.96 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 188458 0 0 0 7603 396 0 0 25 0 1 0 968529893 558460928 99094 4294967295 134512640 135730672 3221224576 3220855136 134770086 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 136343 99094 301 301 0 136042 0
vsize: 545372
[startup+90.006 s]
Raw data (loadavg): 0.96 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 201389 0 0 0 8578 422 0 0 25 0 1 0 968529893 602693632 111805 4294967295 134512640 135730672 3221224576 3220985244 134606736 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 147142 111805 301 301 0 146841 0
vsize: 588568
[startup+100.007 s]
Raw data (loadavg): 0.97 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 217758 0 0 0 9544 456 0 0 25 0 1 0 968529893 625180672 122801 4294967295 134512640 135730672 3221224576 3221222880 134741733 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 152632 122801 301 301 0 152331 0
vsize: 610528
[startup+110.007 s]
Raw data (loadavg): 0.97 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 230930 0 0 0 10511 489 0 0 25 0 1 0 968529893 678543360 135746 4294967295 134512640 135730672 3221224576 3221222880 134787414 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 165660 135746 301 301 0 165359 0
vsize: 662640
[startup+120.008 s]
Raw data (loadavg): 0.98 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 239504 0 0 0 11493 507 0 0 25 0 1 0 968529893 683139072 144162 4294967295 134512640 135730672 3221224576 3221080720 134770420 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 166782 144162 301 301 0 166481 0
vsize: 667128
[startup+130.008 s]
Raw data (loadavg): 0.98 0.94 0.91 2/54 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 248775 0 0 0 12474 526 0 0 25 0 1 0 968529893 684187648 153236 4294967295 134512640 135730672 3221224576 3221222828 135281209 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 167038 153236 301 301 0 166737 0
vsize: 668152
[startup+134.433 s]
Raw data (loadavg): 0.98 0.94 0.91 1/53 18281
Raw data (stat): 18281 (pb2sat-v2) R 18280 20224 20223 0 -1 0 248775 0 0 0 12474 526 0 0 25 0 1 0 968529893 684187648 153236 4294967295 134512640 135730672 3221224576 3221222828 135281209 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 167038 153236 301 301 0 166737 0
vsize: 0

Child status: 1
Real time (s): 134.432
CPU time (s): 134.428
CPU user time (s): 128.864
CPU system time (s): 5.56315
CPU usage (%): 99.9967
Max. virtual memory (Kb): 668152
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####