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-qap10.opb
MD5SUM1c2ccb44cf4c8d63886f263017961035
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 194
Optimality of the best value was proved NO
Number of terms in the objective function 52200
Biggest coefficient in the objective function 26214400
Number of bits for the biggest coefficient in the objective function 25
Sum of the numbers in the objective function 24146585100
Number of bits of the sum of numbers in the objective function 35
Biggest number in a constraint 26214400
Number of bits of the biggest number in a constraint 25
Biggest sum of numbers in a constraint 24146585100
Number of bits of the biggest sum of numbers35
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.6
Number of variables83000
Total number of constraints1820
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints1820
Minimum length of a constraint200
Maximum length of a constraint200

Trace number 10180

Launcher Data

LAUNCH ON wulflinc12 THE 2005-09-23 17:26:01 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8940 boxname=wulflinc12 idbench=736 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  1c2ccb44cf4c8d63886f263017961035  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-qap10.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-qap10.opb
IDLAUNCH: 8940
/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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        937664 kB
Buffers:          6124 kB
Cached:          70852 kB
SwapCached:          0 kB
Active:          26164 kB
Inactive:        53764 kB
HighTotal:      131008 kB
HighFree:        77980 kB
LowTotal:       903652 kB
LowFree:        859684 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11360 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:28:27 (client local time) WITH STATUS 0 IN 143.501 SECONDS
stats: 8940 7 143.501 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/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21975246 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 373 2 364 364 0 9 0
[pid=9540] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-qap10.opb

[startup+10.0026 s]
Raw data (loadavg): 0.94 0.95 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 2574 0 0 0 992 6 0 0 25 0 1 0 21975246 9637888 1887 4294967295 134512640 135987407 3221224560 3221221872 134555859 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 2353 1887 364 364 0 1989 0
[pid=9540] vsize: 9412
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 9412

[startup+20.0035 s]
Raw data (loadavg): 0.95 0.95 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 4190 0 0 0 1988 9 0 0 25 0 1 0 21975246 15224832 2756 4294967295 134512640 135987407 3221224560 3221221872 134555861 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 3717 2756 364 364 0 3353 0
[pid=9540] vsize: 14868
Current children cumulated CPU time (s) 19.97
Current children cumulated vsize (Kb) 14868

[startup+30.0033 s]
Raw data (loadavg): 0.96 0.95 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 4461 0 0 0 2988 9 0 0 25 0 1 0 21975246 15765504 3021 4294967295 134512640 135987407 3221224560 3221221872 134555870 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 3849 3021 364 364 0 3485 0
[pid=9540] vsize: 15396
Current children cumulated CPU time (s) 29.97
Current children cumulated vsize (Kb) 15396

[startup+40.0041 s]
Raw data (loadavg): 0.96 0.95 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 4746 0 0 0 3987 10 0 0 25 0 1 0 21975246 16576512 3301 4294967295 134512640 135987407 3221224560 3221221872 134555859 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 4047 3301 364 364 0 3683 0
[pid=9540] vsize: 16188
Current children cumulated CPU time (s) 39.97
Current children cumulated vsize (Kb) 16188

[startup+50.005 s]
Raw data (loadavg): 0.97 0.95 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 4996 0 0 0 4986 11 0 0 25 0 1 0 21975246 17117184 3547 4294967295 134512640 135987407 3221224560 3221221872 134555861 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 4179 3547 364 364 0 3815 0
[pid=9540] vsize: 16716
Current children cumulated CPU time (s) 49.97
Current children cumulated vsize (Kb) 16716

[startup+60.0058 s]
Raw data (loadavg): 0.97 0.95 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 5215 0 0 0 5985 12 0 0 25 0 1 0 21975246 17793024 3762 4294967295 134512640 135987407 3221224560 3221221872 134555863 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 4344 3762 364 364 0 3980 0
[pid=9540] vsize: 17376
Current children cumulated CPU time (s) 59.97
Current children cumulated vsize (Kb) 17376

[startup+70.0057 s]
Raw data (loadavg): 0.98 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 36547 0 0 0 6911 84 0 0 25 0 1 0 21975246 135032832 24914 4294967295 134512640 135987407 3221224560 3221212144 134856505 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 32967 24914 364 364 0 32603 0
[pid=9540] vsize: 131868
Current children cumulated CPU time (s) 69.95
Current children cumulated vsize (Kb) 131868

[startup+80.0055 s]
Raw data (loadavg): 0.98 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 63345 0 0 0 7845 148 0 0 25 0 1 0 21975246 244748288 40528 4294967295 134512640 135987407 3221224560 3221174848 134856473 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 59753 40528 364 364 0 59389 0
[pid=9540] vsize: 239012
Current children cumulated CPU time (s) 79.93
Current children cumulated vsize (Kb) 239012

[startup+90.0064 s]
Raw data (loadavg): 0.98 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 100102 0 0 0 8758 233 0 0 25 0 1 0 21975246 317243392 55190 4294967295 134512640 135987407 3221224560 3221190676 135477867 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 77452 55190 364 364 0 77088 0
[pid=9540] vsize: 309808
Current children cumulated CPU time (s) 89.91
Current children cumulated vsize (Kb) 309808

[startup+100.006 s]
Raw data (loadavg): 0.98 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 118397 0 0 0 9714 276 0 0 25 0 1 0 21975246 325083136 73188 4294967295 134512640 135987407 3221224560 3221166956 134765224 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 79366 73188 364 364 0 79002 0
[pid=9540] vsize: 317464
Current children cumulated CPU time (s) 99.9
Current children cumulated vsize (Kb) 317464

[startup+110.007 s]
Raw data (loadavg): 0.99 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 183160 0 0 0 10573 413 0 0 25 0 1 0 21975246 552067072 93765 4294967295 134512640 135987407 3221224560 3221212864 134878029 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 134782 93765 364 364 0 134418 0
[pid=9540] vsize: 539128
Current children cumulated CPU time (s) 109.86
Current children cumulated vsize (Kb) 539128

[startup+120.008 s]
Raw data (loadavg): 0.99 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 198439 0 0 0 11533 453 0 0 25 0 1 0 21975246 590352384 108787 4294967295 134512640 135987407 3221224560 3221221880 134613609 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 144129 108787 364 364 0 143765 0
[pid=9540] vsize: 576516
Current children cumulated CPU time (s) 119.86
Current children cumulated vsize (Kb) 576516

[startup+130.008 s]
Raw data (loadavg): 0.99 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 216080 0 0 0 12486 499 0 0 25 0 1 0 21975246 595218432 126132 4294967295 134512640 135987407 3221224560 3221182064 134637036 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 145317 126132 364 364 0 144953 0
[pid=9540] vsize: 581268
Current children cumulated CPU time (s) 129.85
Current children cumulated vsize (Kb) 581268

[startup+140.009 s]
Raw data (loadavg): 0.99 0.96 0.96 2/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) R 9539 9540 4060 0 -1 0 230147 0 0 0 13444 540 0 0 25 0 1 0 21975246 649875456 139962 4294967295 134512640 135987407 3221224560 3221182256 134878060 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9540/statm): 158661 139962 364 364 0 158297 0
[pid=9540] vsize: 634644
Current children cumulated CPU time (s) 139.84
Current children cumulated vsize (Kb) 634644



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+143.257 s]
Raw data (loadavg): 0.99 0.96 0.96 1/55 9540
Raw data (/proc/9540/stat): 9540 (pb2sat) T 9539 9540 4060 0 -1 0 239266 0 0 0 13746 562 0 0 25 0 1 0 21975246 943742976 148868 4294967295 134512640 135987407 3221224560 3221207132 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9540/statm): 230406 148868 364 364 0 230042 0
[pid=9540] vsize: 921624
Current children cumulated CPU time (s) 143.08
Current children cumulated vsize (Kb) 921624

Sending SIGTERM to -9540
Sleeping 2 seconds
Sending SIGKILL to -9540
One traced child (pid=9540) 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): 145.569
CPU time (s): 143.501
CPU user time (s): 137.566
CPU system time (s): 5.9351
CPU usage (%): 98.5796
Max. virtual memory (cumulated for all children) (Kb): 921624

Verifier Data

ERROR: no interpretation found !