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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-seymour1.opb
MD5SUM31b217e2e29235a8785a3af88a4b2ba1
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 513024
Optimality of the best value was proved NO
Number of terms in the objective function 10582
Biggest coefficient in the objective function 1024
Number of bits for the biggest coefficient in the objective function 11
Sum of the numbers in the objective function 2347111
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 1024
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 2347111
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1228.08
Number of variables10582
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 constraint198

Trace number 10179

Launcher Data

LAUNCH ON wulflinc5 THE 2005-09-23 17:26:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8942 boxname=wulflinc5 idbench=738 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  31b217e2e29235a8785a3af88a4b2ba1  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-seymour1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-seymour1.opb
IDLAUNCH: 8942
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.158
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		: 451.158
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:        928392 kB
Buffers:         15332 kB
Cached:          71708 kB
SwapCached:          0 kB
Active:          49416 kB
Inactive:        40540 kB
HighTotal:      131008 kB
HighFree:        55300 kB
LowTotal:       903652 kB
LowFree:        873092 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:            10700 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:28:00 (client local time) WITH STATUS 0 IN 90.7962 SECONDS
stats: 8942 7 90.7962 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21992923 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 373 2 364 364 0 9 0
[pid=9738] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-seymour1.opb

[startup+10.0026 s]
Raw data (loadavg): 0.85 0.93 0.90 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 24999 0 0 0 934 62 0 0 25 0 1 0 21992923 80175104 13849 4294967295 134512640 135987407 3221224560 3221196800 134640115 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 19574 13849 364 364 0 19210 0
[pid=9738] vsize: 78296
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 78296

[startup+20.0033 s]
Raw data (loadavg): 0.87 0.93 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 53112 0 0 0 1866 129 0 0 25 0 1 0 21992923 157753344 30715 4294967295 134512640 135987407 3221224560 3221218688 134637795 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 38514 30715 364 364 0 38150 0
[pid=9738] vsize: 154056
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 154056

[startup+30.0041 s]
Raw data (loadavg): 0.89 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 93779 0 0 0 2769 223 0 0 25 0 1 0 21992923 274759680 49152 4294967295 134512640 135987407 3221224560 3221222032 134607562 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 67080 49152 364 364 0 66716 0
[pid=9738] vsize: 268320
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 268320

[startup+40.0048 s]
Raw data (loadavg): 0.91 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 108953 0 0 0 3728 262 0 0 25 0 1 0 21992923 312643584 64068 4294967295 134512640 135987407 3221224560 3221192488 134639077 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 76329 64068 364 364 0 75965 0
[pid=9738] vsize: 305316
Current children cumulated CPU time (s) 39.9
Current children cumulated vsize (Kb) 305316

[startup+50.0056 s]
Raw data (loadavg): 0.92 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 151436 0 0 0 4633 352 0 0 25 0 1 0 21992923 442073088 86913 4294967295 134512640 135987407 3221224560 3221208976 134558916 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 107928 86913 364 364 0 107564 0
[pid=9738] vsize: 431712
Current children cumulated CPU time (s) 49.85
Current children cumulated vsize (Kb) 431712

[startup+60.0063 s]
Raw data (loadavg): 0.93 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 187842 0 0 0 5544 440 0 0 25 0 1 0 21992923 579805184 98542 4294967295 134512640 135987407 3221224560 3221197508 135479884 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 141554 98542 364 364 0 141190 0
[pid=9738] vsize: 566216
Current children cumulated CPU time (s) 59.84
Current children cumulated vsize (Kb) 566216

[startup+70.0061 s]
Raw data (loadavg): 0.94 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 204528 0 0 0 6500 484 0 0 25 0 1 0 21992923 584806400 114948 4294967295 134512640 135987407 3221224560 3221198428 134533884 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 142775 114948 364 364 0 142411 0
[pid=9738] vsize: 571100
Current children cumulated CPU time (s) 69.84
Current children cumulated vsize (Kb) 571100

[startup+80.0068 s]
Raw data (loadavg): 0.95 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 221116 0 0 0 7458 524 0 0 25 0 1 0 21992923 589676544 131256 4294967295 134512640 135987407 3221224560 3221201728 134856385 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 143964 131256 364 364 0 143600 0
[pid=9738] vsize: 575856
Current children cumulated CPU time (s) 79.82
Current children cumulated vsize (Kb) 575856

[startup+90.0075 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) R 9737 9738 4060 0 -1 0 235054 0 0 0 8423 558 0 0 25 0 1 0 21992923 931577856 144957 4294967295 134512640 135987407 3221224560 3221195308 135500004 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9738/statm): 227436 144957 364 364 0 227072 0
[pid=9738] vsize: 909744
Current children cumulated CPU time (s) 89.81
Current children cumulated vsize (Kb) 909744



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+90.6694 s]
Raw data (loadavg): 0.96 0.94 0.91 1/55 9738
Raw data (/proc/9738/stat): 9738 (pb2sat) T 9737 9738 4060 0 -1 0 242554 0 0 0 8473 573 0 0 25 0 1 0 21992923 943742976 152205 4294967295 134512640 135987407 3221224560 3221195068 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9738/statm): 230406 152205 364 364 0 230042 0
[pid=9738] vsize: 921624
Current children cumulated CPU time (s) 90.46
Current children cumulated vsize (Kb) 921624

Sending SIGTERM to -9738
Sleeping 2 seconds
Sending SIGKILL to -9738
One traced child (pid=9738) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 92.9877
CPU time (s): 90.7962
CPU user time (s): 84.7481
CPU system time (s): 6.04808
CPU usage (%): 97.6433
Max. virtual memory (cumulated for all children) (Kb): 921624

Verifier Data

ERROR: no interpretation found !