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/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-seymour1.opb
MD5SUM6ce78c8c12f3a600932e30ddb0640345
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 64128
Optimality of the best value was proved NO
Number of terms in the objective function 7819
Biggest coefficient in the objective function 128
Number of bits for the biggest coefficient in the objective function 8
Sum of the numbers in the objective function 292583
Number of bits of the sum of numbers in the objective function 19
Biggest number in a constraint 128
Number of bits of the biggest number in a constraint 8
Biggest sum of numbers in a constraint 292583
Number of bits of the biggest sum of numbers19
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1175.27
Number of variables7819
Total number of constraints6316
Number of constraints which are clauses651
Number of constraints which are cardinality constraints (but not clauses)451
Number of constraints which are nor clauses,nor cardinality constraints5214
Minimum length of a constraint1
Maximum length of a constraint144

Trace number 43004 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-16 21:06:22 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=26225 boxname=wulflinc5 idbench=1525 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  6ce78c8c12f3a600932e30ddb0640345  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-seymour1.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-seymour1.opb
IDLAUNCH: 26225
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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		: 451.007
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:        636536 kB
Buffers:         28848 kB
Cached:         345720 kB
SwapCached:        656 kB
Active:          36696 kB
Inactive:       339996 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        636284 kB
SwapTotal:     2097136 kB
SwapFree:      2095540 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5156 kB
Slab:            15764 kB
Committed_AS:    63712 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 21:08:13 (client local time) WITH STATUS 1 IN 110.57 SECONDS
stats: 26225 7 110.57 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: 170407
c big objective detected
c trying from 0 to 511

	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): 0.83 0.94 0.90 2/54 20067
Raw data (stat): 20067 (runsolver) R 20066 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 973872699 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+10.0002 s]
Raw data (loadavg): 0.86 0.94 0.90 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 24762 0 0 0 946 52 0 0 25 0 1 0 973872699 76517376 13841 4294967295 134512640 135730672 3221224576 3221201680 134785969 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 18681 13841 301 301 0 18380 0
vsize: 74724
[startup+20.001 s]
Raw data (loadavg): 0.88 0.94 0.90 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 51491 0 0 0 1885 113 0 0 25 0 1 0 973872699 151158784 29586 4294967295 134512640 135730672 3221224576 3221190204 135301589 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 36904 29586 301 301 0 36603 0
vsize: 147616
[startup+30.0017 s]
Raw data (loadavg): 0.90 0.94 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 90321 0 0 0 2803 195 0 0 25 0 1 0 973872699 265527296 46715 4294967295 134512640 135730672 3221224576 3221221776 134562087 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 64826 46715 301 301 0 64525 0
vsize: 259304
[startup+40.0015 s]
Raw data (loadavg): 0.91 0.94 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 105033 0 0 0 3765 233 0 0 25 0 1 0 973872699 301785088 61165 4294967295 134512640 135730672 3221224576 3221215422 134788698 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 73678 61165 301 301 0 73377 0
vsize: 294712
[startup+50.0022 s]
Raw data (loadavg): 0.93 0.94 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 145329 0 0 0 4685 314 0 0 25 0 1 0 973872699 428105728 82870 4294967295 134512640 135730672 3221224576 3221205000 135288521 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 104518 82870 301 301 0 104217 0
vsize: 418072
[startup+60.002 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 182075 0 0 0 5599 400 0 0 25 0 1 0 973872699 562323456 94812 4294967295 134512640 135730672 3221224576 3221202176 134783994 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 137286 94812 301 301 0 136985 0
vsize: 549144
[startup+70.0031 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 187212 0 0 0 6587 412 0 0 25 0 1 0 973872699 563273728 97289 4294967295 134512640 135730672 3221224576 3221223072 134747823 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 137518 97289 301 301 0 137217 0
vsize: 550072
[startup+80.0034 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 206782 0 0 0 7539 460 0 0 25 0 1 0 973872699 597389312 116636 4294967295 134512640 135730672 3221224576 3220418560 135282223 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 145847 116636 301 301 0 145546 0
vsize: 583388
[startup+90.0032 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 226303 0 0 0 8495 504 0 0 25 0 1 0 973872699 626315264 135923 4294967295 134512640 135730672 3221224576 3220697888 134786467 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 152909 135923 301 301 0 152608 0
vsize: 611636
[startup+100.004 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 241493 0 0 0 9464 536 0 0 25 0 1 0 973872699 699084800 150932 4294967295 134512640 135730672 3221224576 3219445468 135301642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 170675 150932 301 301 0 170374 0
vsize: 682700
[startup+110.005 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 250001 0 0 0 10431 569 0 0 25 0 1 0 973872699 359968768 87456 4294967295 134512640 135730672 3221224576 3221222928 135284080 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 87883 87456 301 301 0 87582 0
vsize: 351532
[startup+110.571 s]
Raw data (loadavg): 0.97 0.95 0.91 1/53 20067
Raw data (stat): 20067 (pb2sat-v2) R 20066 7266 7265 0 -1 0 250001 0 0 0 10431 569 0 0 25 0 1 0 973872699 359968768 87456 4294967295 134512640 135730672 3221224576 3221222928 135284080 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 87883 87456 301 301 0 87582 0
vsize: 0

Child status: 1
Real time (s): 110.571
CPU time (s): 110.57
CPU user time (s): 104.691
CPU system time (s): 5.87911
CPU usage (%): 99.9992
Max. virtual memory (Kb): 682700
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####