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-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-rentacar.opb
MD5SUM1da46f3b0e5a2fdd24f0565227d67bf2
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 5310
Biggest coefficient in the objective function 26843545600000
Number of bits for the biggest coefficient in the objective function 45
Sum of the numbers in the objective function 6957856676716407
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 26843545600000
Number of bits of the biggest number in a constraint 45
Biggest sum of numbers in a constraint 14026955228261965
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark2.48562
Number of variables264240
Total number of constraints6965
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)55
Number of constraints which are nor clauses,nor cardinality constraints6910
Minimum length of a constraint1
Maximum length of a constraint60540

Trace number 39914

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-06-07 22:40:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=27985 boxname=wulflinc1 idbench=941 idsolver=20 numberseed=0
MD5SUM SOLVER: f6aa7fb267fa9710116626be7e6d3048  /oldhome/oroussel/solvers/bsolo_lpr-v2
MD5SUM BENCH:  1da46f3b0e5a2fdd24f0565227d67bf2  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-rentacar.opb
REAL COMMAND:  bsolo_lpr-v2 /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-rentacar.opb
IDLAUNCH: 27985
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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		: 451.053
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:        724752 kB
Buffers:         32600 kB
Cached:         251400 kB
SwapCached:       1192 kB
Active:          56632 kB
Inactive:       229668 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        724500 kB
SwapTotal:     2097136 kB
SwapFree:      2094852 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5736 kB
Slab:            17788 kB
Committed_AS:    92684 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-07 22:41:24 (client local time) WITH STATUS 0 IN 34.0778 SECONDS
stats: 27985 7 34.0778 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
free(): invalid pointer 0x9998930!
c ERROR Parsing file!!!
c ERROR parsing line: -125*BA12E2_bit_10 -250*BA12E2_bit_9 -500*BA12E2_bit_8 -1000*BA12E2_bit_7 -2000*BA12E2_bit_6 -4000*BA12E2_bit_5 -8000*BA12E2_bit_4 -16000*BA12E2_bit_3 -32000*BA12E2_bit_2 -64000*BA12E2_bit_1 -128000*BA12E2_bit0 -256000*BA12E2_bit1 -512000*BA12E2_bit2 -1024000*BA12E2_bit3 -2048000*BA12E2_bit4 -4096000*BA12E2_bit5 -8192000*BA12E2_bit6 -16384000*BA12E2_bit7 -32768000*BA12E2_bit8 -65536000*BA12E2_bit9 -131072000*BA12E2_bit10 -262144000*BA12E2_bit11 -524288000*BA12E2_bit12 -1048576000*BA12E2_bit13 -2097152000*BA12E2_bit14 -4194304000*BA12E2_bit15 -8388608000*BA12E2_bit16 -16777216000*BA12E2_bit17 -33554432000*BA12E2_bit18 -67108864000*BA12E2_bit19 = -4609408;
c Cannot parse input file name: /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-rentacar.opb
s UNKNOWN
c Exit Code: 0
c Total time: 33.929 s
#### 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): 0.85 0.93 0.90 2/55 12682
Raw data (stat): 12682 (runsolver) R 12681 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 839812189 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0001 s]
Raw data (loadavg): 0.88 0.93 0.90 2/55 12682
Raw data (stat): 12682 (bsolo_lpr-v2) R 12681 8378 8377 0 -1 0 12219 0 0 0 968 29 0 0 25 0 1 0 839812189 63143936 12139 4294967295 134512640 134716908 3221224576 3221221196 1077253729 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 15416 12139 1111 63 0 15353 0
vsize: 61664
[startup+19.9998 s]
Raw data (loadavg): 0.89 0.93 0.90 2/55 12682
Raw data (stat): 12682 (bsolo_lpr-v2) R 12681 8378 8377 0 -1 0 37002 0 0 0 1908 89 0 0 25 0 1 0 839812189 164016128 36616 4294967295 134512640 134716908 3221224576 3221221140 1077358213 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 40043 36616 1111 63 0 39980 0
vsize: 160172
[startup+29.9995 s]
Raw data (loadavg): 0.91 0.94 0.90 2/55 12682
Raw data (stat): 12682 (bsolo_lpr-v2) R 12681 8378 8377 0 -1 0 64655 0 0 0 2847 150 0 0 25 0 1 0 839812189 275243008 63913 4294967295 134512640 134716908 3221224576 3221221052 1077198804 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 67198 63913 1111 63 0 67135 0
vsize: 268792
[startup+34.0993 s]
Raw data (loadavg): 0.92 0.94 0.90 1/54 12682
Raw data (stat): 12682 (bsolo_lpr-v2) R 12681 8378 8377 0 -1 0 64655 0 0 0 2847 150 0 0 25 0 1 0 839812189 275243008 63913 4294967295 134512640 134716908 3221224576 3221221052 1077198804 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 67198 63913 1111 63 0 67135 0
vsize: 0

Child status: 0
Real time (s): 34.0991
CPU time (s): 34.0778
CPU user time (s): 32.1651
CPU system time (s): 1.91271
CPU usage (%): 99.9376
Max. virtual memory (Kb): 268792
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####