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-dano3_3.opb
MD5SUM21464e866eda151b04d2fc7e4d1dba6a
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 134217728000
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 569083166190
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables404796
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)72
Number of constraints which are nor clauses,nor cardinality constraints3706
Minimum length of a constraint1
Maximum length of a constraint15900

Trace number 10157

Launcher Data

LAUNCH ON wulflinc12 THE 2005-09-23 17:20:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8915 boxname=wulflinc12 idbench=711 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  21464e866eda151b04d2fc7e4d1dba6a  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-dano3_3.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-dano3_3.opb
IDLAUNCH: 8915
/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:        907728 kB
Buffers:          6028 kB
Cached:         100868 kB
SwapCached:          0 kB
Active:          57404 kB
Inactive:        52380 kB
HighTotal:      131008 kB
HighFree:        48076 kB
LowTotal:       903652 kB
LowFree:        859652 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11488 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:22:05 (client local time) WITH STATUS 0 IN 92.379 SECONDS
stats: 8915 7 92.379 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/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21942107 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9206/statm): 373 2 364 364 0 9 0
[pid=9206] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-dano3_3.opb

[startup+10.002 s]
Raw data (loadavg): 0.95 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 27618 0 0 0 931 66 0 0 25 0 1 0 21942107 86794240 16495 4294967295 134512640 135987407 3221224560 3220851920 134856505 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9206/statm): 21190 16495 364 364 0 20826 0
[pid=9206] vsize: 84760
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 84760

[startup+20.0028 s]
Raw data (loadavg): 0.95 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 55770 0 0 0 1867 128 0 0 25 0 1 0 21942107 164372480 33406 4294967295 134512640 135987407 3221224560 3221188708 134637037 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9206/statm): 40130 33406 364 364 0 39766 0
[pid=9206] vsize: 160520
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 160520

[startup+30.0027 s]
Raw data (loadavg): 0.96 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 95026 0 0 0 2783 210 0 0 25 0 1 0 21942107 314257408 50459 4294967295 134512640 135987407 3221224560 3220841728 134887913 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9206/statm): 76723 50459 364 364 0 76359 0
[pid=9206] vsize: 306892
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 306892

[startup+40.0035 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 111172 0 0 0 3746 248 0 0 25 0 1 0 21942107 318582784 66337 4294967295 134512640 135987407 3221224560 3220997392 134865141 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9206/statm): 77779 66337 364 364 0 77415 0
[pid=9206] vsize: 311116
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 311116

[startup+50.0043 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 154910 0 0 0 4655 334 0 0 25 0 1 0 21942107 648937472 90445 4294967295 134512640 135987407 3221224560 3220975760 134887487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9206/statm): 158432 90448 364 364 0 158068 0
[pid=9206] vsize: 633728
Current children cumulated CPU time (s) 49.89
Current children cumulated vsize (Kb) 633728

[startup+60.0042 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 190170 0 0 0 5578 411 0 0 25 0 1 0 21942107 585609216 100930 4294967295 134512640 135987407 3221224560 3221144400 134637827 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9206/statm): 142971 100930 364 364 0 142607 0
[pid=9206] vsize: 571884
Current children cumulated CPU time (s) 59.89
Current children cumulated vsize (Kb) 571884

[startup+70.005 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 206364 0 0 0 6542 447 0 0 25 0 1 0 21942107 590204928 116856 4294967295 134512640 135987407 3221224560 3220834892 134637042 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9206/statm): 144093 116856 364 364 0 143729 0
[pid=9206] vsize: 576372
Current children cumulated CPU time (s) 69.89
Current children cumulated vsize (Kb) 576372

[startup+80.0058 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 222759 0 0 0 7503 485 0 0 25 0 1 0 21942107 594259968 132980 4294967295 134512640 135987407 3221224560 3220977608 135488127 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9206/statm): 145083 132980 364 364 0 144719 0
[pid=9206] vsize: 580332
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 580332

[startup+90.0067 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) R 9205 9206 4060 0 -1 0 235942 0 0 0 8474 514 0 0 25 0 1 0 21942107 648781824 145947 4294967295 134512640 135987407 3221224560 3220807272 135487877 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9206/statm): 158394 145947 364 364 0 158030 0
[pid=9206] vsize: 633576
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 633576



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+92.1604 s]
Raw data (loadavg): 0.98 0.97 0.98 1/55 9206
Raw data (/proc/9206/stat): 9206 (pb2sat) T 9205 9206 4060 0 -1 0 244198 0 0 0 8673 530 0 0 25 0 1 0 21942107 943730688 153977 4294967295 134512640 135987407 3221224560 3221082476 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9206/statm): 230403 153977 364 364 0 230039 0
[pid=9206] vsize: 921612
Current children cumulated CPU time (s) 92.03
Current children cumulated vsize (Kb) 921612

Sending SIGTERM to -9206
Sleeping 2 seconds
Sending SIGKILL to -9206
One traced child (pid=9206) 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): 94.4832
CPU time (s): 92.379
CPU user time (s): 86.7598
CPU system time (s): 5.61915
CPU usage (%): 97.7728
Max. virtual memory (cumulated for all children) (Kb): 921612

Verifier Data

ERROR: no interpretation found !