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).
    Note that some very long lines in this section may be truncated by your web browser !
  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

Namemps-v2-20-10/MIPLIB/miplib3/normalized-mps-v2-20-10-gt2.opb
MD5SUMf1382105ee9fb79777762a53cf6a73c1
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 21166
Optimality of the best value was proved YES
Number of terms in the objective function 304
Biggest coefficient in the objective function 62376
Number of bits for the biggest coefficient in the objective function 16
Sum of the numbers in the objective function 3092598
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 62376
Number of bits of the biggest number in a constraint 16
Biggest sum of numbers in a constraint 3092598
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark18.2432
Number of variables556
Total number of constraints217
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)26
Number of constraints which are nor clauses,nor cardinality constraints191
Minimum length of a constraint1
Maximum length of a constraint48

Trace number 10079

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-23 16:51:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8838 boxname=wulflinc25 idbench=634 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  f1382105ee9fb79777762a53cf6a73c1  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-gt2.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-gt2.opb
IDLAUNCH: 8838
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.002
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	: 3
cpu MHz		: 451.002
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        923152 kB
Buffers:         17492 kB
Cached:          74852 kB
SwapCached:          0 kB
Active:          44792 kB
Inactive:        50432 kB
HighTotal:      131008 kB
HighFree:        52276 kB
LowTotal:       903652 kB
LowFree:        870876 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:            10748 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:53:41 (client local time) WITH STATUS 1 IN 110.808 SECONDS
stats: 8838 7 110.808 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 266910
c small objective detected

	Unexpected exception :
	St9bad_alloc

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21734088 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 373 2 364 364 0 9 0
[pid=8800] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-gt2.opb

[startup+10.0013 s]
Raw data (loadavg): 0.91 0.95 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 30670 0 0 0 928 67 0 0 25 0 1 0 21734088 97525760 19475 4294967295 134512640 135987407 3221224560 3221144044 135480496 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 23810 19475 364 364 0 23446 0
[pid=8800] vsize: 95240
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 95240

[startup+20.0019 s]
Raw data (loadavg): 0.93 0.95 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 61532 0 0 0 1863 129 0 0 25 0 1 0 21734088 194719744 39118 4294967295 134512640 135987407 3221224560 3221118300 134637029 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 47539 39118 364 364 0 47175 0
[pid=8800] vsize: 190156
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 190156

[startup+30.0025 s]
Raw data (loadavg): 0.94 0.95 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 103814 0 0 0 2774 214 0 0 25 0 1 0 21734088 326504448 59204 4294967295 134512640 135987407 3221224560 3221130464 134559106 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 79713 59204 364 364 0 79349 0
[pid=8800] vsize: 318852
Current children cumulated CPU time (s) 29.88
Current children cumulated vsize (Kb) 318852

[startup+40.0031 s]
Raw data (loadavg): 0.95 0.95 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 122028 0 0 0 3735 251 0 0 25 0 1 0 21734088 386416640 77204 4294967295 134512640 135987407 3221224560 3221144928 134887893 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 94340 77204 364 364 0 93976 0
[pid=8800] vsize: 377360
Current children cumulated CPU time (s) 39.86
Current children cumulated vsize (Kb) 377360

[startup+50.0037 s]
Raw data (loadavg): 0.95 0.95 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 150034 0 0 0 4672 311 0 0 25 0 1 0 21734088 571408384 104656 4294967295 134512640 135987407 3221224560 3221143728 134856622 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 139504 104656 364 364 0 139140 0
[pid=8800] vsize: 558016
Current children cumulated CPU time (s) 49.83
Current children cumulated vsize (Kb) 558016

[startup+60.0033 s]
Raw data (loadavg): 0.96 0.95 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 206161 0 0 0 5549 430 0 0 25 0 1 0 21734088 649990144 116958 4294967295 134512640 135987407 3221224560 3221143040 134864321 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 158689 116958 364 364 0 158325 0
[pid=8800] vsize: 634756
Current children cumulated CPU time (s) 59.79
Current children cumulated vsize (Kb) 634756

[startup+70.0039 s]
Raw data (loadavg): 0.97 0.96 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 222090 0 0 0 6513 465 0 0 25 0 1 0 21734088 705327104 132693 4294967295 134512640 135987407 3221224560 3221143840 134635350 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 172199 132693 364 364 0 171835 0
[pid=8800] vsize: 688796
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 688796

[startup+80.0045 s]
Raw data (loadavg): 0.97 0.96 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 241561 0 0 0 7474 501 0 0 25 0 1 0 21734088 734588928 151937 4294967295 134512640 135987407 3221224560 3221161344 134537357 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 179343 151937 364 364 0 178979 0
[pid=8800] vsize: 717372
Current children cumulated CPU time (s) 79.75
Current children cumulated vsize (Kb) 717372

[startup+90.0051 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 260459 0 0 0 8434 539 0 0 25 0 1 0 21734088 761643008 170612 4294967295 134512640 135987407 3221224560 3221168640 134878063 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 185948 170612 364 364 0 185584 0
[pid=8800] vsize: 743792
Current children cumulated CPU time (s) 89.73
Current children cumulated vsize (Kb) 743792

[startup+100.005 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 275043 0 0 0 9403 568 0 0 25 0 1 0 21734088 832561152 185022 4294967295 134512640 135987407 3221224560 3221149584 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 203262 185022 364 364 0 202898 0
[pid=8800] vsize: 813048
Current children cumulated CPU time (s) 99.71
Current children cumulated vsize (Kb) 813048

[startup+110.004 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 8800
Raw data (/proc/8800/stat): 8800 (pb2sat) R 8799 8800 4004 0 -1 0 281281 0 0 0 10373 598 0 0 25 0 1 0 21734088 481193984 116922 4294967295 134512640 135987407 3221224560 3221223408 134884101 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8800/statm): 117479 116922 364 364 0 117115 0
[pid=8800] vsize: 469916
Current children cumulated CPU time (s) 109.71
Current children cumulated vsize (Kb) 469916
One traced child (pid=8800) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 111.099
CPU time (s): 110.808
CPU user time (s): 104.578
CPU system time (s): 6.23005
CPU usage (%): 99.7379
Max. virtual memory (cumulated for all children) (Kb): 813048

Verifier Data

ERROR: no interpretation found !